Which is a valid proportion?

Three-fourths = StartFraction 21 over 28 EndFraction

StartFraction 5 over 6 EndFraction = StartFraction 29 over 30 EndFraction

StartFraction 4 over 7 EndFraction = StartFraction 16 over 49 EndFraction

Two-fifths = StartFraction 12 over 15 EndFraction

Answer: three - fourths = 21/28

Step-by-step explanation:

Hi, to answer this question we have to express the fractions in decimal form.

If both sides are equal the proportion is valid

• 3/4 = 21/28

0.75 = 0.75

• 5/6 = 29/30

0.83333 ≠0.966666

• 4/7=16/49

0.57≠0.32

• 2/5=12/15

0.4 ≠0.8

So, the valid proportion is three - fourths = 21/28

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