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Finding the Fourth Proportional to 3,308.54, 4,565.92 and 1,981.98

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Solution

The fourth proportional to 3,308.54, 4,565.92 and 1,981.98 is: 2,735.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,308.54 : 4,565.92 = 1,981.98 : x
  2. Step 2: Convert to fraction form
    3,308.54/4,565.92 = 1,981.98/x
  3. Step 3: Cross multiply
    3,308.54x = 4,565.92 × 1,981.98
  4. Step 4: Simplify right side
    3,308.54x = 9,049,562.12
  5. Step 5: Solve for x
    x = 9,049,562.12/3,308.54
  6. Step 6: Final answer
    x = 2,735.21

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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.