Home / 8,768.31-13,147.60-2,921.73

Finding the Fourth Proportional to 8,768.31, 13,147.60 and 2,921.73

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Solution

The fourth proportional to 8,768.31, 13,147.60 and 2,921.73 is: 4,380.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,768.31 : 13,147.60 = 2,921.73 : x
  2. Step 2: Convert to fraction form
    8,768.31/13,147.60 = 2,921.73/x
  3. Step 3: Cross multiply
    8,768.31x = 13,147.60 × 2,921.73
  4. Step 4: Simplify right side
    8,768.31x = 38,413,737.35
  5. Step 5: Solve for x
    x = 38,413,737.35/8,768.31
  6. Step 6: Final answer
    x = 4,380.97

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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.