Proportional To
Part of Math Symbols
Proportional To has no standard Windows Alt code. Copy the character directly, or use its HTML entity or Unicode value instead.
- Alt code
- None
- HTML entity
- ∝
- Unicode
- U+221D
About this symbol
∝ means proportional to: y ∝ x says that y grows in step with x, so doubling x doubles y. It is often credited to the English mathematician William Emerson, in 1768.
Unicode facts
- Official name
- PROPORTIONAL TO
- Type
- Maths symbol
- Unicode block
- Mathematical Operators
- Unicode group
- Operators
- Added in
- Unicode 1.1 (1993)
Click the symbol or any value at the top of the page to copy it. See the full Math Symbols chart for related characters.