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Finding the Fourth Proportional to 2,791.92, 4,183.28 and 1,403.88

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Solution

The fourth proportional to 2,791.92, 4,183.28 and 1,403.88 is: 2,103.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.92 : 4,183.28 = 1,403.88 : x
  2. Step 2: Convert to fraction form
    2,791.92/4,183.28 = 1,403.88/x
  3. Step 3: Cross multiply
    2,791.92x = 4,183.28 × 1,403.88
  4. Step 4: Simplify right side
    2,791.92x = 5,872,823.13
  5. Step 5: Solve for x
    x = 5,872,823.13/2,791.92
  6. Step 6: Final answer
    x = 2,103.51

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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.