Home / 3,928.76-5,893.12-1,331.88

Finding the Fourth Proportional to 3,928.76, 5,893.12 and 1,331.88

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Solution

The fourth proportional to 3,928.76, 5,893.12 and 1,331.88 is: 1,997.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.76 : 5,893.12 = 1,331.88 : x
  2. Step 2: Convert to fraction form
    3,928.76/5,893.12 = 1,331.88/x
  3. Step 3: Cross multiply
    3,928.76x = 5,893.12 × 1,331.88
  4. Step 4: Simplify right side
    3,928.76x = 7,848,928.67
  5. Step 5: Solve for x
    x = 7,848,928.67/3,928.76
  6. Step 6: Final answer
    x = 1,997.81

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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.