Home / 2,791.38-4,186.26-1,125.50

Finding the Fourth Proportional to 2,791.38, 4,186.26 and 1,125.50

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Solution

The fourth proportional to 2,791.38, 4,186.26 and 1,125.50 is: 1,687.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.38 : 4,186.26 = 1,125.50 : x
  2. Step 2: Convert to fraction form
    2,791.38/4,186.26 = 1,125.50/x
  3. Step 3: Cross multiply
    2,791.38x = 4,186.26 × 1,125.50
  4. Step 4: Simplify right side
    2,791.38x = 4,711,635.63
  5. Step 5: Solve for x
    x = 4,711,635.63/2,791.38
  6. Step 6: Final answer
    x = 1,687.92

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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.