Home / 1,481.55-2,044.92-921.72

Finding the Fourth Proportional to 1,481.55, 2,044.92 and 921.72

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Solution

The fourth proportional to 1,481.55, 2,044.92 and 921.72 is: 1,272.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.55 : 2,044.92 = 921.72 : x
  2. Step 2: Convert to fraction form
    1,481.55/2,044.92 = 921.72/x
  3. Step 3: Cross multiply
    1,481.55x = 2,044.92 × 921.72
  4. Step 4: Simplify right side
    1,481.55x = 1,884,843.66
  5. Step 5: Solve for x
    x = 1,884,843.66/1,481.55
  6. Step 6: Final answer
    x = 1,272.21

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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.