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Finding the Fourth Proportional to 3,865.54, 5,335.32 and 2,745.32

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Solution

The fourth proportional to 3,865.54, 5,335.32 and 2,745.32 is: 3,789.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.54 : 5,335.32 = 2,745.32 : x
  2. Step 2: Convert to fraction form
    3,865.54/5,335.32 = 2,745.32/x
  3. Step 3: Cross multiply
    3,865.54x = 5,335.32 × 2,745.32
  4. Step 4: Simplify right side
    3,865.54x = 14,647,160.70
  5. Step 5: Solve for x
    x = 14,647,160.70/3,865.54
  6. Step 6: Final answer
    x = 3,789.16

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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.