Home / 8,803.11-12,149.63-5,617.78

Finding the Fourth Proportional to 8,803.11, 12,149.63 and 5,617.78

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Solution

The fourth proportional to 8,803.11, 12,149.63 and 5,617.78 is: 7,753.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,803.11 : 12,149.63 = 5,617.78 : x
  2. Step 2: Convert to fraction form
    8,803.11/12,149.63 = 5,617.78/x
  3. Step 3: Cross multiply
    8,803.11x = 12,149.63 × 5,617.78
  4. Step 4: Simplify right side
    8,803.11x = 68,253,948.42
  5. Step 5: Solve for x
    x = 68,253,948.42/8,803.11
  6. Step 6: Final answer
    x = 7,753.39

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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.