What mathematical process is used when adjusting recipes for larger quantities?

Scaling up the proportions is the correct approach when adjusting recipes for larger quantities. This process involves increasing the amount of each ingredient proportionally to maintain the same flavor and texture in the dish, ensuring that the end result remains consistent with the original recipe. For instance, if you want to double a recipe, you would double the amount of each ingredient to ensure the overall balance and effectiveness of the flavors is preserved.

Additionally, this method also helps in planning and managing resource allocation, especially in large-scale food preparation, like in a restaurant or for catering purposes. It ensures that all components of the dish increase together in harmony, avoiding any imbalance that could occur if only some ingredients were adjusted.

The other choices do not effectively address the need for proportionally increasing ingredients: dividing proportions focuses on reducing ingredient amounts rather than increasing, scaling down would not be suitable when trying to make larger batches, and eliminating ingredients could lead to an incomplete or unbalanced dish. Thus, scaling up the proportions is the most suitable method for adjusting recipes to larger servings.