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Finding the Fourth Proportional to 8,406, 11,601.09 and 4,680

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Solution

The fourth proportional to 8,406, 11,601.09 and 4,680 is: 6,458.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,406 : 11,601.09 = 4,680 : x
  2. Step 2: Convert to fraction form
    8,406/11,601.09 = 4,680/x
  3. Step 3: Cross multiply
    8,406x = 11,601.09 × 4,680
  4. Step 4: Simplify right side
    8,406x = 54,293,101.20
  5. Step 5: Solve for x
    x = 54,293,101.20/8,406
  6. Step 6: Final answer
    x = 6,458.85

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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.