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Finding the Fourth Proportional to 8,508.86, 12,764.64 and 2,963.78

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Solution

The fourth proportional to 8,508.86, 12,764.64 and 2,963.78 is: 4,446.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,508.86 : 12,764.64 = 2,963.78 : x
  2. Step 2: Convert to fraction form
    8,508.86/12,764.64 = 2,963.78/x
  3. Step 3: Cross multiply
    8,508.86x = 12,764.64 × 2,963.78
  4. Step 4: Simplify right side
    8,508.86x = 37,831,520.92
  5. Step 5: Solve for x
    x = 37,831,520.92/8,508.86
  6. Step 6: Final answer
    x = 4,446.14

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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.