Home / 8,786.31-13,174.61-2,939.73

Finding the Fourth Proportional to 8,786.31, 13,174.61 and 2,939.73

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Solution

The fourth proportional to 8,786.31, 13,174.61 and 2,939.73 is: 4,407.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.31 : 13,174.61 = 2,939.73 : x
  2. Step 2: Convert to fraction form
    8,786.31/13,174.61 = 2,939.73/x
  3. Step 3: Cross multiply
    8,786.31x = 13,174.61 × 2,939.73
  4. Step 4: Simplify right side
    8,786.31x = 38,729,781.56
  5. Step 5: Solve for x
    x = 38,729,781.56/8,786.31
  6. Step 6: Final answer
    x = 4,407.97

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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.