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Finding the Fourth Proportional to 8,641.61, 12,951.63 and 3,705.52

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Solution

The fourth proportional to 8,641.61, 12,951.63 and 3,705.52 is: 5,553.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,641.61 : 12,951.63 = 3,705.52 : x
  2. Step 2: Convert to fraction form
    8,641.61/12,951.63 = 3,705.52/x
  3. Step 3: Cross multiply
    8,641.61x = 12,951.63 × 3,705.52
  4. Step 4: Simplify right side
    8,641.61x = 47,992,524.00
  5. Step 5: Solve for x
    x = 47,992,524.00/8,641.61
  6. Step 6: Final answer
    x = 5,553.66

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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.