01
Find the weight represented by one part
The ratio has six parts in total because 3 + 2 + 1 = 6. For a 600-gram batch, one part represents 100 grams. Component A therefore receives 300 grams, B receives 200 grams and C receives 100 grams. Add the three weights to check that the total returns to 600. A worksheet can keep columns for component, number of parts and resulting weight. The chosen weight unit belongs in the column heading so the values are not mistaken for volumes, which would require different information about the ingredients.
02
Scale the target while preserving the relationship
For a 900-gram batch, each of the six parts represents 150 grams. The new component weights are A 450 grams, B 300 grams and C 150 grams. Each weight is also the original weight multiplied by 1.5, the ratio of 900 to 600. These two calculation routes provide a useful arithmetic check. The proportions remain one-half, one-third and one-sixth of the total respectively. The example has whole-gram results; a different target might require an explicit rounding rule and a separate check of the rounded total.
03
Do not turn a scaling rule into a food claim
Keeping ingredient proportions unchanged would preserve a numerical ratio, but it would not by itself establish cooking time, mixing behaviour or storage suitability. The fictional labels prevent those missing facts from being hidden behind a realistic-looking recipe. A completed template should state the target weight, component ratio, calculated amounts and any rounding. If used later for an actual food project, its preparation and safety requirements would need to be addressed separately. The worksheet’s conclusion is simply that both sets of numbers express the same 3:2:1 relationship.