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Finding the Fourth Proportional to 8,508.61, 12,755.13 and 3,578.60

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Solution

The fourth proportional to 8,508.61, 12,755.13 and 3,578.60 is: 5,364.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,508.61 : 12,755.13 = 3,578.60 : x
  2. Step 2: Convert to fraction form
    8,508.61/12,755.13 = 3,578.60/x
  3. Step 3: Cross multiply
    8,508.61x = 12,755.13 × 3,578.60
  4. Step 4: Simplify right side
    8,508.61x = 45,645,444.44
  5. Step 5: Solve for x
    x = 45,645,444.44/8,508.61
  6. Step 6: Final answer
    x = 5,364.62

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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.