Cross Multiplication Calculator
Solve proportions using cross multiplication. Given a/b = c/x, find the unknown x = bc/a instantly.
How to Use the Cross Multiplication Calculator
- Enter the three known values a, b, and c from the proportion a/b = c/x.
- Click Calculate to solve for x.
- The result shows x and verifies the proportion.
مرجع سريع
| من | إلى |
|---|---|
| 2/3 = 4/x | x = 6 |
| 5/8 = 15/x | x = 24 |
| 1/4 = 7/x | x = 28 |
| 3/10 = 9/x | x = 30 |
حالات الاستخدام
- •Solving proportion problems in math homework.
- •Scaling recipes by finding equivalent ratios.
- •Converting units with known conversion ratios.
الصيغة
If a/b = c/x, then x = (b × c) / a. Cross multiplication: a × x = b × c.
الأسئلة الشائعة
What is cross multiplication?
A method to solve proportions: multiply diagonally (a × x = b × c) and solve for the unknown.
Can a be zero?
No, a must be non-zero since it's the denominator of the first fraction.
Can I use decimals?
Yes, the calculator accepts any positive decimal values.