Home / 5,139.31-7,708.97-3,291.29

Finding the Fourth Proportional to 5,139.31, 7,708.97 and 3,291.29

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Solution

The fourth proportional to 5,139.31, 7,708.97 and 3,291.29 is: 4,936.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.31 : 7,708.97 = 3,291.29 : x
  2. Step 2: Convert to fraction form
    5,139.31/7,708.97 = 3,291.29/x
  3. Step 3: Cross multiply
    5,139.31x = 7,708.97 × 3,291.29
  4. Step 4: Simplify right side
    5,139.31x = 25,372,439.41
  5. Step 5: Solve for x
    x = 25,372,439.41/5,139.31
  6. Step 6: Final answer
    x = 4,936.94

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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.