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Finding the Fourth Proportional to 2,757.78, 4,138.02 and 2,030.60

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Solution

The fourth proportional to 2,757.78, 4,138.02 and 2,030.60 is: 3,046.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.78 : 4,138.02 = 2,030.60 : x
  2. Step 2: Convert to fraction form
    2,757.78/4,138.02 = 2,030.60/x
  3. Step 3: Cross multiply
    2,757.78x = 4,138.02 × 2,030.60
  4. Step 4: Simplify right side
    2,757.78x = 8,402,673.76
  5. Step 5: Solve for x
    x = 8,402,673.76/2,757.78
  6. Step 6: Final answer
    x = 3,046.90

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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.