比例计算器
This calculator solves the proportion a:b = c:d for any unknown value.
Enter values for any three of a, b, c, or d. Leave the unknown value blank.
Example: For 2:4 = 3:x, enter a=2, b=4, c=3, and leave d blank.
This calculator solves the proportion a:b = c:d for any unknown value.
Enter values for any three of a, b, c, or d. Leave the unknown value blank.
Example: For 2:4 = 3:x, enter a=2, b=4, c=3, and leave d blank.