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Finding the Fourth Proportional to 8,928.11, 13,353.89 and 6,434.93

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Solution

The fourth proportional to 8,928.11, 13,353.89 and 6,434.93 is: 9,624.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,928.11 : 13,353.89 = 6,434.93 : x
  2. Step 2: Convert to fraction form
    8,928.11/13,353.89 = 6,434.93/x
  3. Step 3: Cross multiply
    8,928.11x = 13,353.89 × 6,434.93
  4. Step 4: Simplify right side
    8,928.11x = 85,931,248.43
  5. Step 5: Solve for x
    x = 85,931,248.43/8,928.11
  6. Step 6: Final answer
    x = 9,624.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.