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Finding the Fourth Proportional to 8,569.47, 12,855.23 and 3,021.66

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Solution

The fourth proportional to 8,569.47, 12,855.23 and 3,021.66 is: 4,532.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,569.47 : 12,855.23 = 3,021.66 : x
  2. Step 2: Convert to fraction form
    8,569.47/12,855.23 = 3,021.66/x
  3. Step 3: Cross multiply
    8,569.47x = 12,855.23 × 3,021.66
  4. Step 4: Simplify right side
    8,569.47x = 38,844,134.28
  5. Step 5: Solve for x
    x = 38,844,134.28/8,569.47
  6. Step 6: Final answer
    x = 4,532.85

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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.