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Finding the Fourth Proportional to 8,610.99, 12,917.91 and 3,677.69

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Solution

The fourth proportional to 8,610.99, 12,917.91 and 3,677.69 is: 5,517.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.99 : 12,917.91 = 3,677.69 : x
  2. Step 2: Convert to fraction form
    8,610.99/12,917.91 = 3,677.69/x
  3. Step 3: Cross multiply
    8,610.99x = 12,917.91 × 3,677.69
  4. Step 4: Simplify right side
    8,610.99x = 47,508,003.84
  5. Step 5: Solve for x
    x = 47,508,003.84/8,610.99
  6. Step 6: Final answer
    x = 5,517.14

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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.