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Finding the Fourth Proportional to 8,392.48, 12,562.80 and 4,487.20

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Solution

The fourth proportional to 8,392.48, 12,562.80 and 4,487.20 is: 6,716.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,392.48 : 12,562.80 = 4,487.20 : x
  2. Step 2: Convert to fraction form
    8,392.48/12,562.80 = 4,487.20/x
  3. Step 3: Cross multiply
    8,392.48x = 12,562.80 × 4,487.20
  4. Step 4: Simplify right side
    8,392.48x = 56,371,796.16
  5. Step 5: Solve for x
    x = 56,371,796.16/8,392.48
  6. Step 6: Final answer
    x = 6,716.94

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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.