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Finding the Fourth Proportional to 8,913.11, 12,278.65 and 7,496.83

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Solution

The fourth proportional to 8,913.11, 12,278.65 and 7,496.83 is: 10,327.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.11 : 12,278.65 = 7,496.83 : x
  2. Step 2: Convert to fraction form
    8,913.11/12,278.65 = 7,496.83/x
  3. Step 3: Cross multiply
    8,913.11x = 12,278.65 × 7,496.83
  4. Step 4: Simplify right side
    8,913.11x = 92,050,951.68
  5. Step 5: Solve for x
    x = 92,050,951.68/8,913.11
  6. Step 6: Final answer
    x = 10,327.59

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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.