Home / 2,791.38-4,188.21-1,230.55

Finding the Fourth Proportional to 2,791.38, 4,188.21 and 1,230.55

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Solution

The fourth proportional to 2,791.38, 4,188.21 and 1,230.55 is: 1,846.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.38 : 4,188.21 = 1,230.55 : x
  2. Step 2: Convert to fraction form
    2,791.38/4,188.21 = 1,230.55/x
  3. Step 3: Cross multiply
    2,791.38x = 4,188.21 × 1,230.55
  4. Step 4: Simplify right side
    2,791.38x = 5,153,801.82
  5. Step 5: Solve for x
    x = 5,153,801.82/2,791.38
  6. Step 6: Final answer
    x = 1,846.33

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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.