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Finding the Fourth Proportional to 3,997.96, 5,993.28 and 1,399.48

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Solution

The fourth proportional to 3,997.96, 5,993.28 and 1,399.48 is: 2,097.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.96 : 5,993.28 = 1,399.48 : x
  2. Step 2: Convert to fraction form
    3,997.96/5,993.28 = 1,399.48/x
  3. Step 3: Cross multiply
    3,997.96x = 5,993.28 × 1,399.48
  4. Step 4: Simplify right side
    3,997.96x = 8,387,475.49
  5. Step 5: Solve for x
    x = 8,387,475.49/3,997.96
  6. Step 6: Final answer
    x = 2,097.94

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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.