Question

Find the value of x in the given proportions
a) 5 : 4 :: x : 30​

Answer 1

Answer:

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Answer 2

Answer: 37.5

Step-by-step explanation:

PRODUCT OF MEANS = PRODUCT OF EXTREMES

5 : 4 :: x : 30

x = 5 x 30 /4

  = 5 x 15 /2

  = 72 /2

  = 37.5