Home / 8,781.50-12,118.41-4,952.85

Finding the Fourth Proportional to 8,781.50, 12,118.41 and 4,952.85

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Solution

The fourth proportional to 8,781.50, 12,118.41 and 4,952.85 is: 6,834.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.50 : 12,118.41 = 4,952.85 : x
  2. Step 2: Convert to fraction form
    8,781.50/12,118.41 = 4,952.85/x
  3. Step 3: Cross multiply
    8,781.50x = 12,118.41 × 4,952.85
  4. Step 4: Simplify right side
    8,781.50x = 60,020,666.97
  5. Step 5: Solve for x
    x = 60,020,666.97/8,781.50
  6. Step 6: Final answer
    x = 6,834.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.