Home / 3,871.46-5,342.61-2,103.09

Finding the Fourth Proportional to 3,871.46, 5,342.61 and 2,103.09

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Solution

The fourth proportional to 3,871.46, 5,342.61 and 2,103.09 is: 2,902.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.46 : 5,342.61 = 2,103.09 : x
  2. Step 2: Convert to fraction form
    3,871.46/5,342.61 = 2,103.09/x
  3. Step 3: Cross multiply
    3,871.46x = 5,342.61 × 2,103.09
  4. Step 4: Simplify right side
    3,871.46x = 11,235,989.66
  5. Step 5: Solve for x
    x = 11,235,989.66/3,871.46
  6. Step 6: Final answer
    x = 2,902.27

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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.