Question

1. Is 2/12 = 5/28 a true proportion?

Answer 1

Answer:

$\dfrac{2}{12}=\dfrac{5}{28}$

Cross multiply:

⇒ 2 x 28 = 5 x 12

⇒ 56 = 60

Is this proportion true?

No, because the cross products are not equal.

The proportion is not true, because 2/12 and 5/28 are not equivalent ratios.