Which of the following symbols is commonly used for a proportion?

Which of the following symbols is commonly used for a proportion?

مندرجہ ذیل میں سے کون سی علامت تناسب کے لیے استعمال ہوتی ہے؟
Explanation

The symbol used to denote the proportionality is '∝'.

For example, if we say, a is proportional to b, then it is represented as “a ∝ b”