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Finding the Fourth Proportional to 6,606, 9,116.28 and 3,953.79

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Solution

The fourth proportional to 6,606, 9,116.28 and 3,953.79 is: 5,456.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,606 : 9,116.28 = 3,953.79 : x
  2. Step 2: Convert to fraction form
    6,606/9,116.28 = 3,953.79/x
  3. Step 3: Cross multiply
    6,606x = 9,116.28 × 3,953.79
  4. Step 4: Simplify right side
    6,606x = 36,043,856.70
  5. Step 5: Solve for x
    x = 36,043,856.70/6,606
  6. Step 6: Final answer
    x = 5,456.23

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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.