Home / 711.50-1,487

Finding the Third Proportional to 711.50 and 1,487

Calculator

Solution

The third proportional to 711.50 and 1,487 is: 3,107.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.50 : 1,487 = 1,487 : x
  2. Step 2: Convert to fraction form
    711.50/1,487 = 1,487/x
  3. Step 3: Cross multiply
    711.50x = 1,487 × 1,487
  4. Step 4: Simplify right side
    711.50x = 2,211,169
  5. Step 5: Solve for x
    x = 2,211,169/711.50
  6. Step 6: Final answer
    x = 3,107.76

Related Problems

Find third proportional to 355.75 and 743.50
Half scale
Find third proportional to 1,423 and 2,974
Double scale
Find third proportional to 714 and 1,491
Similar ratio
Find third proportional to 1,067.25 and 2,230.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.