Question

Determine whether the following numbers in proportion or not : 12, 15 , 4, 5

Answer 1

Answer:

Yes, 12 , 15, 4, 5 are in proportion.

Step-by-step explanation:

If any four numbers are in proportion

Ie .

➡A : B : : C : D

Then

➡Product of means= product of extrems.

Ie.

➡B x C = A x D.

Now,

➡Given nos are

12, 15, 4, 5.

➡Product of means = 15 x 4

✔Product of means= 60

➡Product of extremes = 12 x 5

✔Product of extremes = 60

➡Product of means= product of extremes.

So,

✔12 : 15 : : 4 : 5.

Answer 2

Answer:

12×5=60

15×4=60

it is proportion