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Finding the Fourth Proportional to 3,326.79, 4,978.62 and 2,734.68

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Solution

The fourth proportional to 3,326.79, 4,978.62 and 2,734.68 is: 4,092.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.79 : 4,978.62 = 2,734.68 : x
  2. Step 2: Convert to fraction form
    3,326.79/4,978.62 = 2,734.68/x
  3. Step 3: Cross multiply
    3,326.79x = 4,978.62 × 2,734.68
  4. Step 4: Simplify right side
    3,326.79x = 13,614,932.54
  5. Step 5: Solve for x
    x = 13,614,932.54/3,326.79
  6. Step 6: Final answer
    x = 4,092.51

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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.