Regra de 3 is a Chrome add-on tool designed to simplify and speed up the process of solving proportion problems. This vibrant and efficient calculator offers a user-friendly interface for swift calculations.

Whether you need to calculate ingredient quantities for a recipe or determine proportional distances on a map, this calculator is your go-to tool. With multiple colors and quick validations, it streamlines the process of finding the fourth proportion in any scenario.

Moreover, Regra de 3 stores your visual preferences using local storage, ensuring a personalized and seamless experience. Dive into the convenience of this calculator and solve your proportion problems with ease.