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Finding the Fourth Proportional to 8,671.11, 13,006.05 and 4,961.71

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Solution

The fourth proportional to 8,671.11, 13,006.05 and 4,961.71 is: 7,442.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,671.11 : 13,006.05 = 4,961.71 : x
  2. Step 2: Convert to fraction form
    8,671.11/13,006.05 = 4,961.71/x
  3. Step 3: Cross multiply
    8,671.11x = 13,006.05 × 4,961.71
  4. Step 4: Simplify right side
    8,671.11x = 64,532,248.35
  5. Step 5: Solve for x
    x = 64,532,248.35/8,671.11
  6. Step 6: Final answer
    x = 7,442.21

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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.