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Finding the Fourth Proportional to 3,928.92, 5,892.03 and 1,331.25

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Solution

The fourth proportional to 3,928.92, 5,892.03 and 1,331.25 is: 1,996.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.92 : 5,892.03 = 1,331.25 : x
  2. Step 2: Convert to fraction form
    3,928.92/5,892.03 = 1,331.25/x
  3. Step 3: Cross multiply
    3,928.92x = 5,892.03 × 1,331.25
  4. Step 4: Simplify right side
    3,928.92x = 7,843,764.94
  5. Step 5: Solve for x
    x = 7,843,764.94/3,928.92
  6. Step 6: Final answer
    x = 1,996.42

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1.5x scale

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.