Q:

# What is a true proportion?

A:

A true proportion is a mathematical equation which states that one ratio is equal to another. A true proportion will often be written in the following format: a:b = x:y in which the ratio between a and b is equal to the ratio between x and y.

## Keep Learning

Often mathematical problems will ask for proof that a proportion is true. To prove that a proportion is true, the components of the proportion can be cross-multiplied.

a:b = x:y

a/b = x/y

ay = bx

If the product of a and y is equal to the product of b and x, then the proportion is a true proportion.

Sources:

## Related Questions

• A: Obtain the pitch, or slope angle, of a roof by calculating the ratio of the change in the roof's height to the corresponding horizontal distance. Roof pitc... Full Answer >
Filed Under:
• A: The golden ratio is often used to provide pleasing composition in art, architecture and design. The Great Pyramid of Giza, the Parthenon and many of the pa... Full Answer >
Filed Under:
• A: The value of y in the linear interpolation equation is defined as a sum of y0 and the product of y differential (y1 – y0), multiplied by the ratio between ... Full Answer >
Filed Under:
• A: Prentice Hall's companion website for ratio and proportion dosage calculations, Pearsoned.com, can help students gain more knowledge and prepare for the pe... Full Answer >
Filed Under:
PEOPLE SEARCH FOR