ASVAB/PiCAT Arithmetic Reasoning Practice Test Q: Ratios/Proportions

In this video, Grammar Hero works out a practice test question that requires you to use a proportion and cross-multiplication to quickly find an unknown value. This question should closely mirror what you should expect to see in the Arithmetic Reasoning (AR) subtest of the Armed Services Vocational Aptitude Battery (ASVAB) as well as the Pre-screening internet-delivered Computer Adaptive Test (PiCAT). ​​​​​#grammarhero ​​#ASVAB​​​​​ #AceTheASVAB #ASVABVersion #PiCAT #algebra #geometry #Pythagoreantheorem #afqt #asvabexam #asvabtest #asvabmath #asvabmathknowledge #asvabmathprep #asvabtutoring #asvabmathhelp #arithmeticreasoning #asvabexam #asvabtest #asvabmath #asvabmathknowledge #asvabmathprep #asvabtutoring #asvabmathhelp #arithmeticreasoning

[@hinokuza]

I divided the 9 and the 36 and did 4/1=p/4 = 16

[@incredible5587]

You can do this in two simple steps simple how many times does 4 go ingot 9 equals 2.25. so you know know the shadow is 2.25 times bigger than the object so see how many times 2.25 goes into 36, and its 16!!!

[@cmsahotc]

Similar triangles = if the shadow is 4 times longer, the tree is also 4 times higher - 4x4 = 16

[@sassyb58]

Or...
Set up the ratio or proportion as shown with vertical distance over horizontal distance. Find the equivalent fraction of 4/9 = x/36 or
4 x ? = x and 9 x ? = 36
Multiply both by 4,
so the numerator 4 x4 = 16 as the unknown numerator.

[@leon-ld8zb]

Holy crap! The asvab went nuts. Back in the 80's it was much easier.

[@GrammarHero]

I'm pretty sure the test has been more or less the same since the 80s, and this question is pretty straightforward (middle school math).

[@TylerGarnett-v1b]

I just did "4 goes into 9 2.1 times. Therefore 36 divided by 2.1.. 16"
Simplify your math folks.

[@CharlesDourdy]

also works in Trig. Angle is 23.962deg, pole height is 16

[@th5841]

Find the common demenour betwee 9 and 36 which is 36.
4*4/9*4= X/36
Remove 36
16=X

[@andrewmayes4176]

Why did my brain go 4 goes into 9 twice plus some, and 36 divided by 2 is 18, so the answer is 16 cause that's half of 36 minus some

[@sagedoesstuff588]

that fails to take into account the light's origin? deppending on distance the result will vary

[@jardinierpotaverger]

36 = 4 * 9, IS shorter and smarter

[@Will-Mac_Life]

This is what I need

[@GrammarHero]

There are almost 500 shorts like this one on my channel!

[@FirstFiveFrets]

Pythagoras is proud of you.

[@jayplayz7937]

I divided 36/9 got 4 then did 4x4 and got the 16

[@HoushouRattengod]

9x = 4 * 4 * 9
x = 4 * 4
x = 16

[@k6662010]

instead try this>> 36 divided by 9 =4...then 4x4=16...tree is 16ft tall....lol

[@incredible5587]

9 divided by 4 = 2.25, not you take 36 and divide by 2.25 equals 16, so many easy ways to solve this but maker used the longest.

[@StinkyBlack1]

It’s a little less than half. Boom. Don’t think too hard about it.

[@JD-fp2dn]

How to know if it’s a proportion?

[@GrammarHero]

I have a playlist called Proportions for the ASVAB. If you go through it, you'll get a good feel for when to use a proportion.