Question

Is the ratio 4.2:1.5 proportional to the ratio12.6:4.5? Explain.

Answer 1

Answer:

Yes, the ratio is proportional

Step-by-step explanation:

given 4.2 : 1.5 =? 12.6 : 4.5 is it proportional

it must follow the means extremes property

$\frac{a}{b}$ = $\frac{c}{d}$

a*d = b*c, so let's plug in the values

$\frac{4.2}{1.5}$ =? $\frac{12.4}{4.5}$

(4.2)*(4.5) =? (1.5)*(12.6)

18.9 = 18.9 which is true; therefore the ratio is proportional

Answer 2

Answer:

No

Step-by-step explanation:

All the numbers have to be multiplied by the same amount for it to be proportional

A proportional amount to 4:2:1:5 would be 12:6:3:15

They have all been multiplied by the same number 3