Question

What set of Ratios form a proportion? Medal and fan!

Answer 1

Answer choices?

Answer 2

4/9 and 12/25 ,3/7 and 18/42, 5/11 and 20/45 last but not least 5/8,15/25

Answer 3

@xMissAlyCatx Help!

Answer 4

I have to go now :( Try to @ a qualified helper or a mod! :D

Answer 5

@Anaise Please help!

Answer 6

Regarding the first set: 4/9 and 12/25

It may help (just a little) to re-write these fractions as \[\frac{ 4 }{9 },\frac{ 12 }{ 25 }\]

Answer 7

if a/b, c/d are two ratios then
a/b = c/d
a.b,c,d are in proportion

Answer 8

Oh, so its 3/7 18/42 as the aswer! Ok! That helped! Thank you!

Answer 9

There are several ways in which you can check a pair of ratios to determine whether they form a proportion.

One is to cross-multiply. Does 4*25 equal 9*12?

Another is to reduce one or both of the given ratios.