Home / 726-1,311

Finding the Third Proportional to 726 and 1,311

Calculator

Solution

The third proportional to 726 and 1,311 is: 2,367.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    726 : 1,311 = 1,311 : x
  2. Step 2: Convert to fraction form
    726/1,311 = 1,311/x
  3. Step 3: Cross multiply
    726x = 1,311 × 1,311
  4. Step 4: Simplify right side
    726x = 1,718,721
  5. Step 5: Solve for x
    x = 1,718,721/726
  6. Step 6: Final answer
    x = 2,367.38

Related Problems

Find third proportional to 363 and 655.50
Half scale
Find third proportional to 1,452 and 2,622
Double scale
Find third proportional to 728 and 1,315
Similar ratio
Find third proportional to 1,089 and 1,966.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.