Home / 3,111.38-4,665.65-1,356.31

Finding the Fourth Proportional to 3,111.38, 4,665.65 and 1,356.31

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Solution

The fourth proportional to 3,111.38, 4,665.65 and 1,356.31 is: 2,033.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.38 : 4,665.65 = 1,356.31 : x
  2. Step 2: Convert to fraction form
    3,111.38/4,665.65 = 1,356.31/x
  3. Step 3: Cross multiply
    3,111.38x = 4,665.65 × 1,356.31
  4. Step 4: Simplify right side
    3,111.38x = 6,328,067.75
  5. Step 5: Solve for x
    x = 6,328,067.75/3,111.38
  6. Step 6: Final answer
    x = 2,033.85

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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.