Home / 805-1,439

Finding the Third Proportional to 805 and 1,439

Calculator

Solution

The third proportional to 805 and 1,439 is: 2,572.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    805 : 1,439 = 1,439 : x
  2. Step 2: Convert to fraction form
    805/1,439 = 1,439/x
  3. Step 3: Cross multiply
    805x = 1,439 × 1,439
  4. Step 4: Simplify right side
    805x = 2,070,721
  5. Step 5: Solve for x
    x = 2,070,721/805
  6. Step 6: Final answer
    x = 2,572.32

Related Problems

Find third proportional to 402.50 and 719.50
Half scale
Find third proportional to 1,610 and 2,878
Double scale
Find third proportional to 807 and 1,443
Similar ratio
Find third proportional to 1,207.50 and 2,158.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.