1.

Equivalent ratio of a/b,c/d,e/f can be written as​

Answer»

Step-by-step EXPLANATION:

With this setup (a/b=c/d=e/f) you can only ever express one variable in terms of 3 OTHERS, but I just wanted to put in a GOOD word for one of my favourite little rules that sadly does not GET much publicity today: The Rule of Threes.

Basically, if you have three numbers a, b, c, such that, a/b = c/d (also represented as ratios or proportions, a:b = c:d, or “a is to b what c is to d”) then you can calculate any one of them using the other 3 KNOWN values by multiplying on the diagonal that doesn’t contain the unknown, then dividing by the remaining number.

Here’s how it works:

\frac{a}{b} = \frac{c}{d}


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