Home / 1,372.12-2,058.46-447.76

Finding the Fourth Proportional to 1,372.12, 2,058.46 and 447.76

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Solution

The fourth proportional to 1,372.12, 2,058.46 and 447.76 is: 671.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.12 : 2,058.46 = 447.76 : x
  2. Step 2: Convert to fraction form
    1,372.12/2,058.46 = 447.76/x
  3. Step 3: Cross multiply
    1,372.12x = 2,058.46 × 447.76
  4. Step 4: Simplify right side
    1,372.12x = 921,696.05
  5. Step 5: Solve for x
    x = 921,696.05/1,372.12
  6. Step 6: Final answer
    x = 671.73

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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.