After making some changes to the design, there was a marginal improvement in the performance of the product.
The company calculated the marginal cost of producing an additional unit before deciding to increase production.
The project manager weighed the marginal benefit of adding more features to the software against the additional development time.
Economists study the concept of marginal utility to understand how consumers make decisions about purchasing goods and services.
As your income increases, you may move into a higher marginal tax rate bracket.