Question

ratio and proportion 21:42:3:X find the value of x
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Answer 1

Answer :-

The value of x is 6

Explanation :-

Given :

Proportion = 21: 42 : 3 : x

To find :

The value of x

Solution :

$\star$ As we know :-

$\boxed{\sf{Mean \times Mean\:Terms = Extreme \times Extreme \:Terms}}$

Mean Terms = 42 and 3

Extreme Terms = 21 and x

$\sf{\implies}42 \times 3 = 21 \times x$

$\sf{\implies}126 = 21x$

$\sf{\implies}x = \dfrac{126}{21}$

$\sf{\implies}x = 6$

$\therefore$ The value of x is 6

Verification :-

$\sf{\implies}42 \times 3 = 21 \times 6$

$\sf{\implies}126 = 126$

$\therefore$ The value of x is 6