Question

Which of the following are in proportion? (a) 5, 3 ,20 ,12 (b) 2, 4, 15, 22 (c) 12 ,31 ,11 ,22 (d) 12, 15, 4, 8​

Answer 1

Answer:

The statement is true because when we multiple extream and mean the result is same

Answer 2

Answer:

Option A) 5, 3, 20, 12 is in proportion. Look below!

Step-by-step explanation:

Let's look at all the options:

a) 5, 3, 20, 12

Product of means = 3 x 20 = 60

Product of extremes = 5 x 12 = 60

Therefore, 5 : 3 :: 20 : 12

b) 2, 4, 15, 22

Product of means = 4 x 15 = 60

Product of extremes = 2 x 22 = 44

Therefore, 2 : 4 is not equal to 15 : 22

c) 12, 31, 11, 22

Product of means = 31 x 11 = 341

Product of extremes = 12 x 22 = 264

Therefore, 12 : 31 is not equal to 11 : 22

d) 12, 15, 4, 8

Product of means = 15 X 4 = 60

Product of extremes = 12 X 8 = 96

Therefore, 12 : 15 is not equal to 4 : 8