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Finding the Fourth Proportional to 8,606.57, 12,909.87 and 3,059.91

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Solution

The fourth proportional to 8,606.57, 12,909.87 and 3,059.91 is: 4,589.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.57 : 12,909.87 = 3,059.91 : x
  2. Step 2: Convert to fraction form
    8,606.57/12,909.87 = 3,059.91/x
  3. Step 3: Cross multiply
    8,606.57x = 12,909.87 × 3,059.91
  4. Step 4: Simplify right side
    8,606.57x = 39,503,040.31
  5. Step 5: Solve for x
    x = 39,503,040.31/8,606.57
  6. Step 6: Final answer
    x = 4,589.87

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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.