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Finding the Fourth Proportional to 8,569.70, 12,856.17 and 4,406.30

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Solution

The fourth proportional to 8,569.70, 12,856.17 and 4,406.30 is: 6,610.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,569.70 : 12,856.17 = 4,406.30 : x
  2. Step 2: Convert to fraction form
    8,569.70/12,856.17 = 4,406.30/x
  3. Step 3: Cross multiply
    8,569.70x = 12,856.17 × 4,406.30
  4. Step 4: Simplify right side
    8,569.70x = 56,648,141.87
  5. Step 5: Solve for x
    x = 56,648,141.87/8,569.70
  6. Step 6: Final answer
    x = 6,610.28

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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.