Solving the means and extremes

In mathematics, "means and extremes" typically refers to the relationship between the terms of a proportion. In a proportion expressed as ( a/b = c/d ), ( a ) and ( d ) are called the extremes, while ( b ) and ( c ) are the means. To solve for an unknown in such equations, you can cross-multiply, leading to the equation ( a \cdot d = b \cdot c ). This principle allows for finding missing values and establishing equivalent ratiOS in various applications.