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Finding the Fourth Proportional to 7,006.61, 9,669.12 and 3,862.85

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Solution

The fourth proportional to 7,006.61, 9,669.12 and 3,862.85 is: 5,330.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,006.61 : 9,669.12 = 3,862.85 : x
  2. Step 2: Convert to fraction form
    7,006.61/9,669.12 = 3,862.85/x
  3. Step 3: Cross multiply
    7,006.61x = 9,669.12 × 3,862.85
  4. Step 4: Simplify right side
    7,006.61x = 37,350,360.19
  5. Step 5: Solve for x
    x = 37,350,360.19/7,006.61
  6. Step 6: Final answer
    x = 5,330.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.