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Finding the Fourth Proportional to 8,672.66, 13,009.09 and 3,124.77

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Solution

The fourth proportional to 8,672.66, 13,009.09 and 3,124.77 is: 4,687.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.66 : 13,009.09 = 3,124.77 : x
  2. Step 2: Convert to fraction form
    8,672.66/13,009.09 = 3,124.77/x
  3. Step 3: Cross multiply
    8,672.66x = 13,009.09 × 3,124.77
  4. Step 4: Simplify right side
    8,672.66x = 40,650,414.16
  5. Step 5: Solve for x
    x = 40,650,414.16/8,672.66
  6. Step 6: Final answer
    x = 4,687.19

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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.