Question

Using the proportional method, solve for x in this ratio: 2 : x :: 4 : 2

Answer 1

The answer is:  " 1 " .
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                           " x = 1 " . 
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Explanation:
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Write as a fraction:
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  $\frac{2}{x} = \frac{4}{2}$  ;


Reduce the " $\frac{4}{2}$ " to "$\frac{2}{1}$:

Since "(4/2) = (4÷2) / (2÷2) " = "(2/1)"  ; 
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And we rewrite as:
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  $\frac{2}{x} = \frac{2}{1}$  ;


as we can see:  " x = 1 " .
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