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Finding the Fourth Proportional to 3,242.78, 4,856.37 and 1,851.90

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Solution

The fourth proportional to 3,242.78, 4,856.37 and 1,851.90 is: 2,773.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,242.78 : 4,856.37 = 1,851.90 : x
  2. Step 2: Convert to fraction form
    3,242.78/4,856.37 = 1,851.90/x
  3. Step 3: Cross multiply
    3,242.78x = 4,856.37 × 1,851.90
  4. Step 4: Simplify right side
    3,242.78x = 8,993,480.38
  5. Step 5: Solve for x
    x = 8,993,480.38/3,242.78
  6. Step 6: Final answer
    x = 2,773.39

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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.