Question

If the first, second and third terms of a propertion are 9, 19 and 27, find its fourth term​

Answer 1

Answer:

9:19::27:57

Step-by-step explanation:

9/19 = 27/x

9×3= 27

Therefore, 19×3= 57

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Answer 2

Solution!!

The concept of proportion has to be used here. The first, second and third terms are given in the question. We have to find the fourth term.

Let the fourth term be x.

9 : 19 :: 27 : x

9/19 = 27/x

x = (19 × 27)/9

x = 513/9

x = 57

So, the fourth term is 57.

More information:-

In a : b = c : d,

a, b, c and d are called the terms of the proportion; where a = first term, b = second term, c = third term and d = fourth term.

a and d are called extremes whereas b and c are called means.

Product of extremes = Product of means