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Finding the Fourth Proportional to 3,102.75, 4,655.42 and 1,255.17

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Solution

The fourth proportional to 3,102.75, 4,655.42 and 1,255.17 is: 1,883.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.75 : 4,655.42 = 1,255.17 : x
  2. Step 2: Convert to fraction form
    3,102.75/4,655.42 = 1,255.17/x
  3. Step 3: Cross multiply
    3,102.75x = 4,655.42 × 1,255.17
  4. Step 4: Simplify right side
    3,102.75x = 5,843,337.25
  5. Step 5: Solve for x
    x = 5,843,337.25/3,102.75
  6. Step 6: Final answer
    x = 1,883.28

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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.