Home / 1,610.10-2,221.92-911.43

Finding the Fourth Proportional to 1,610.10, 2,221.92 and 911.43

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Solution

The fourth proportional to 1,610.10, 2,221.92 and 911.43 is: 1,257.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,610.10 : 2,221.92 = 911.43 : x
  2. Step 2: Convert to fraction form
    1,610.10/2,221.92 = 911.43/x
  3. Step 3: Cross multiply
    1,610.10x = 2,221.92 × 911.43
  4. Step 4: Simplify right side
    1,610.10x = 2,025,124.55
  5. Step 5: Solve for x
    x = 2,025,124.55/1,610.10
  6. Step 6: Final answer
    x = 1,257.76

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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.