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Finding the Fourth Proportional to 2,757.78, 4,138.29 and 2,064.96

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Solution

The fourth proportional to 2,757.78, 4,138.29 and 2,064.96 is: 3,098.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.78 : 4,138.29 = 2,064.96 : x
  2. Step 2: Convert to fraction form
    2,757.78/4,138.29 = 2,064.96/x
  3. Step 3: Cross multiply
    2,757.78x = 4,138.29 × 2,064.96
  4. Step 4: Simplify right side
    2,757.78x = 8,545,403.32
  5. Step 5: Solve for x
    x = 8,545,403.32/2,757.78
  6. Step 6: Final answer
    x = 3,098.65

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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.