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Finding the Fourth Proportional to 3,997.76, 5,992.86 and 1,399.02

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Solution

The fourth proportional to 3,997.76, 5,992.86 and 1,399.02 is: 2,097.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.76 : 5,992.86 = 1,399.02 : x
  2. Step 2: Convert to fraction form
    3,997.76/5,992.86 = 1,399.02/x
  3. Step 3: Cross multiply
    3,997.76x = 5,992.86 × 1,399.02
  4. Step 4: Simplify right side
    3,997.76x = 8,384,131.00
  5. Step 5: Solve for x
    x = 8,384,131.00/3,997.76
  6. Step 6: Final answer
    x = 2,097.21

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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.