Home / 5,149.13-7,105.81-2,791.28

Finding the Fourth Proportional to 5,149.13, 7,105.81 and 2,791.28

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Solution

The fourth proportional to 5,149.13, 7,105.81 and 2,791.28 is: 3,851.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.13 : 7,105.81 = 2,791.28 : x
  2. Step 2: Convert to fraction form
    5,149.13/7,105.81 = 2,791.28/x
  3. Step 3: Cross multiply
    5,149.13x = 7,105.81 × 2,791.28
  4. Step 4: Simplify right side
    5,149.13x = 19,834,262.83
  5. Step 5: Solve for x
    x = 19,834,262.83/5,149.13
  6. Step 6: Final answer
    x = 3,851.97

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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.