Home / 2,631.88-3,947.82-1,072.54

Finding the Fourth Proportional to 2,631.88, 3,947.82 and 1,072.54

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Solution

The fourth proportional to 2,631.88, 3,947.82 and 1,072.54 is: 1,608.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.88 : 3,947.82 = 1,072.54 : x
  2. Step 2: Convert to fraction form
    2,631.88/3,947.82 = 1,072.54/x
  3. Step 3: Cross multiply
    2,631.88x = 3,947.82 × 1,072.54
  4. Step 4: Simplify right side
    2,631.88x = 4,234,194.86
  5. Step 5: Solve for x
    x = 4,234,194.86/2,631.88
  6. Step 6: Final answer
    x = 1,608.81

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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.