How do you simplify to tell whether the ratios $1/2, 3/6$ form a proportion?

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Answer 1 · 2017-04-10T09:06:44

See explanation

Method 1

Let $k$ be some constant. Then we have

$1/2xxk/k=3/6$ if $k$ exists then they are a proportion

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Method 2

If the answer is 1 then they form a proportion.

$1/2-:3/6=1$

How do you simplify to tell whether the ratios 1/2, 3/61/2, 3/6 form a proportion?