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Finding the Fourth Proportional to 8,607.15, 12,914.68 and 5,104.11

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Solution

The fourth proportional to 8,607.15, 12,914.68 and 5,104.11 is: 7,658.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.15 : 12,914.68 = 5,104.11 : x
  2. Step 2: Convert to fraction form
    8,607.15/12,914.68 = 5,104.11/x
  3. Step 3: Cross multiply
    8,607.15x = 12,914.68 × 5,104.11
  4. Step 4: Simplify right side
    8,607.15x = 65,917,947.33
  5. Step 5: Solve for x
    x = 65,917,947.33/8,607.15
  6. Step 6: Final answer
    x = 7,658.51

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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.