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Finding the Fourth Proportional to 8,672.76, 13,011.21 and 2,829.38

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Solution

The fourth proportional to 8,672.76, 13,011.21 and 2,829.38 is: 4,244.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.76 : 13,011.21 = 2,829.38 : x
  2. Step 2: Convert to fraction form
    8,672.76/13,011.21 = 2,829.38/x
  3. Step 3: Cross multiply
    8,672.76x = 13,011.21 × 2,829.38
  4. Step 4: Simplify right side
    8,672.76x = 36,813,592.29
  5. Step 5: Solve for x
    x = 36,813,592.29/8,672.76
  6. Step 6: Final answer
    x = 4,244.74

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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.