Home / 730-1,390

Finding the Third Proportional to 730 and 1,390

Calculator

Solution

The third proportional to 730 and 1,390 is: 2,646.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    730 : 1,390 = 1,390 : x
  2. Step 2: Convert to fraction form
    730/1,390 = 1,390/x
  3. Step 3: Cross multiply
    730x = 1,390 × 1,390
  4. Step 4: Simplify right side
    730x = 1,932,100
  5. Step 5: Solve for x
    x = 1,932,100/730
  6. Step 6: Final answer
    x = 2,646.71

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.