Home / 3,111.97-4,660.49-1,791.72

Finding the Fourth Proportional to 3,111.97, 4,660.49 and 1,791.72

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Solution

The fourth proportional to 3,111.97, 4,660.49 and 1,791.72 is: 2,683.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.97 : 4,660.49 = 1,791.72 : x
  2. Step 2: Convert to fraction form
    3,111.97/4,660.49 = 1,791.72/x
  3. Step 3: Cross multiply
    3,111.97x = 4,660.49 × 1,791.72
  4. Step 4: Simplify right side
    3,111.97x = 8,350,293.14
  5. Step 5: Solve for x
    x = 8,350,293.14/3,111.97
  6. Step 6: Final answer
    x = 2,683.28

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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.