Such an equation is called a "proportion".
A ratio shows the relationship between two quantities.Formula
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A proportion
The molar ratio of two reactants in a chemical reaction is determined by the coefficients of the balanced chemical equation. These coefficients represent the number of moles of each reactant that are involved in the reaction. The molar ratio is the ratio of these coefficients.
Proportion ^.^
Ration does not have units. You have to convert one of them to the same units and then work it out. For example: what is the ratio of 4m to 200cm ? This is the same as: 4m to 2m - so the answer is 2 to 1. (400cm to 200cm gives the same answer.)
A 'ratio' shows a relationship between two numbers. There's no such thing as the ratio of one single number.
It is called a proportion.
Proportion
An equation.
equation
An equation.