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Finding the Fourth Proportional to 5,147.73, 7,103.85 and 2,789.87

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Solution

The fourth proportional to 5,147.73, 7,103.85 and 2,789.87 is: 3,850.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.73 : 7,103.85 = 2,789.87 : x
  2. Step 2: Convert to fraction form
    5,147.73/7,103.85 = 2,789.87/x
  3. Step 3: Cross multiply
    5,147.73x = 7,103.85 × 2,789.87
  4. Step 4: Simplify right side
    5,147.73x = 19,818,782.48
  5. Step 5: Solve for x
    x = 19,818,782.48/5,147.73
  6. Step 6: Final answer
    x = 3,850.00

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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.