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Finding the Fourth Proportional to 2,261.92, 3,391.77 and 800.86

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Solution

The fourth proportional to 2,261.92, 3,391.77 and 800.86 is: 1,200.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.92 : 3,391.77 = 800.86 : x
  2. Step 2: Convert to fraction form
    2,261.92/3,391.77 = 800.86/x
  3. Step 3: Cross multiply
    2,261.92x = 3,391.77 × 800.86
  4. Step 4: Simplify right side
    2,261.92x = 2,716,332.92
  5. Step 5: Solve for x
    x = 2,716,332.92/2,261.92
  6. Step 6: Final answer
    x = 1,200.90

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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.