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Finding the Fourth Proportional to 8,679.33, 11,977.07 and 5,141.97

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Solution

The fourth proportional to 8,679.33, 11,977.07 and 5,141.97 is: 7,095.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.33 : 11,977.07 = 5,141.97 : x
  2. Step 2: Convert to fraction form
    8,679.33/11,977.07 = 5,141.97/x
  3. Step 3: Cross multiply
    8,679.33x = 11,977.07 × 5,141.97
  4. Step 4: Simplify right side
    8,679.33x = 61,585,708.92
  5. Step 5: Solve for x
    x = 61,585,708.92/8,679.33
  6. Step 6: Final answer
    x = 7,095.68

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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.