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Finding the Fourth Proportional to 8,887.70, 12,265.76 and 4,909.38

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Solution

The fourth proportional to 8,887.70, 12,265.76 and 4,909.38 is: 6,775.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,887.70 : 12,265.76 = 4,909.38 : x
  2. Step 2: Convert to fraction form
    8,887.70/12,265.76 = 4,909.38/x
  3. Step 3: Cross multiply
    8,887.70x = 12,265.76 × 4,909.38
  4. Step 4: Simplify right side
    8,887.70x = 60,217,276.83
  5. Step 5: Solve for x
    x = 60,217,276.83/8,887.70
  6. Step 6: Final answer
    x = 6,775.35

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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.