Home / 1,481.24-2,221.85-615.55

Finding the Fourth Proportional to 1,481.24, 2,221.85 and 615.55

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Solution

The fourth proportional to 1,481.24, 2,221.85 and 615.55 is: 923.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.24 : 2,221.85 = 615.55 : x
  2. Step 2: Convert to fraction form
    1,481.24/2,221.85 = 615.55/x
  3. Step 3: Cross multiply
    1,481.24x = 2,221.85 × 615.55
  4. Step 4: Simplify right side
    1,481.24x = 1,367,659.77
  5. Step 5: Solve for x
    x = 1,367,659.77/1,481.24
  6. Step 6: Final answer
    x = 923.32

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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.