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Finding the Fourth Proportional to 3,871.73, 5,343 and 2,103.33

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Solution

The fourth proportional to 3,871.73, 5,343 and 2,103.33 is: 2,902.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.73 : 5,343 = 2,103.33 : x
  2. Step 2: Convert to fraction form
    3,871.73/5,343 = 2,103.33/x
  3. Step 3: Cross multiply
    3,871.73x = 5,343 × 2,103.33
  4. Step 4: Simplify right side
    3,871.73x = 11,238,092.19
  5. Step 5: Solve for x
    x = 11,238,092.19/3,871.73
  6. Step 6: Final answer
    x = 2,902.61

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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.