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Finding the Fourth Proportional to 6,603.92, 9,905.88 and 3,866

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Solution

The fourth proportional to 6,603.92, 9,905.88 and 3,866 is: 5,799

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603.92 : 9,905.88 = 3,866 : x
  2. Step 2: Convert to fraction form
    6,603.92/9,905.88 = 3,866/x
  3. Step 3: Cross multiply
    6,603.92x = 9,905.88 × 3,866
  4. Step 4: Simplify right side
    6,603.92x = 38,296,132.08
  5. Step 5: Solve for x
    x = 38,296,132.08/6,603.92
  6. Step 6: Final answer
    x = 5,799

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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.