A "3:4 ratio" is a way to compare two quantities, showing that for every 3 units of one quantity, there are 4 units of another. This ratio can be applied in various contexts, such as in art, where it helps determine the dimensions of a canvas, or in cooking, where it can guide ingredient proportions. In practical terms, if you have 3 apples and 4 oranges, the ratio of apples to oranges is 3:4. Ratios like this are useful for understanding relationships between different items and can be simplified or scaled up while maintaining the same proportion.