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Finding the Fourth Proportional to 6,659.92, 9,974.84 and 3,199.76

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Solution

The fourth proportional to 6,659.92, 9,974.84 and 3,199.76 is: 4,792.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,659.92 : 9,974.84 = 3,199.76 : x
  2. Step 2: Convert to fraction form
    6,659.92/9,974.84 = 3,199.76/x
  3. Step 3: Cross multiply
    6,659.92x = 9,974.84 × 3,199.76
  4. Step 4: Simplify right side
    6,659.92x = 31,917,094.04
  5. Step 5: Solve for x
    x = 31,917,094.04/6,659.92
  6. Step 6: Final answer
    x = 4,792.41

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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.