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Finding the Fourth Proportional to 5,249.25, 7,243.97 and 2,891.39

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Solution

The fourth proportional to 5,249.25, 7,243.97 and 2,891.39 is: 3,990.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,249.25 : 7,243.97 = 2,891.39 : x
  2. Step 2: Convert to fraction form
    5,249.25/7,243.97 = 2,891.39/x
  3. Step 3: Cross multiply
    5,249.25x = 7,243.97 × 2,891.39
  4. Step 4: Simplify right side
    5,249.25x = 20,945,091.74
  5. Step 5: Solve for x
    x = 20,945,091.74/5,249.25
  6. Step 6: Final answer
    x = 3,990.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.