Home / 2,081.44-3,121.24-1,107.31

Finding the Fourth Proportional to 2,081.44, 3,121.24 and 1,107.31

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Solution

The fourth proportional to 2,081.44, 3,121.24 and 1,107.31 is: 1,660.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.44 : 3,121.24 = 1,107.31 : x
  2. Step 2: Convert to fraction form
    2,081.44/3,121.24 = 1,107.31/x
  3. Step 3: Cross multiply
    2,081.44x = 3,121.24 × 1,107.31
  4. Step 4: Simplify right side
    2,081.44x = 3,456,180.26
  5. Step 5: Solve for x
    x = 3,456,180.26/2,081.44
  6. Step 6: Final answer
    x = 1,660.48

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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.