Scaling recipe quantities using proportions can be tricky. It often leads to mistakes. Here are some common problems you might face:

• Complex Measurements: Changing units (like grams to ounces) can be confusing.

• Ingredient Ratios: Keeping the right ratios of ingredients can be hard. This might make your dish too salty or too sweet.

To make things easier, follow these simple steps:

1. Identify Original Ratios: Find out the ratios of ingredients in the recipe you have.

2. Decide Scale Factor: Choose a scale factor to decide how much you want to increase or decrease the recipe. You can call this factor $k$.

3. Apply the Scale Factor: Multiply the amount of each ingredient by $k$:

   $\text{New quantity} = \text{Original quantity} \times k$

Always double-check your math to avoid any accidents!