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Finding the Fourth Proportional to 8,469.55, 12,707.97 and 4,090.29

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Solution

The fourth proportional to 8,469.55, 12,707.97 and 4,090.29 is: 6,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.55 : 12,707.97 = 4,090.29 : x
  2. Step 2: Convert to fraction form
    8,469.55/12,707.97 = 4,090.29/x
  3. Step 3: Cross multiply
    8,469.55x = 12,707.97 × 4,090.29
  4. Step 4: Simplify right side
    8,469.55x = 51,979,282.61
  5. Step 5: Solve for x
    x = 51,979,282.61/8,469.55
  6. Step 6: Final answer
    x = 6,137.20

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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.