Home / 1,249.25-1,723.20-800.97

Finding the Fourth Proportional to 1,249.25, 1,723.20 and 800.97

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Solution

The fourth proportional to 1,249.25, 1,723.20 and 800.97 is: 1,104.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.25 : 1,723.20 = 800.97 : x
  2. Step 2: Convert to fraction form
    1,249.25/1,723.20 = 800.97/x
  3. Step 3: Cross multiply
    1,249.25x = 1,723.20 × 800.97
  4. Step 4: Simplify right side
    1,249.25x = 1,380,231.50
  5. Step 5: Solve for x
    x = 1,380,231.50/1,249.25
  6. Step 6: Final answer
    x = 1,104.85

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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.