Home / 3,871.36-5,342.49-2,102.97

Finding the Fourth Proportional to 3,871.36, 5,342.49 and 2,102.97

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Solution

The fourth proportional to 3,871.36, 5,342.49 and 2,102.97 is: 2,902.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.36 : 5,342.49 = 2,102.97 : x
  2. Step 2: Convert to fraction form
    3,871.36/5,342.49 = 2,102.97/x
  3. Step 3: Cross multiply
    3,871.36x = 5,342.49 × 2,102.97
  4. Step 4: Simplify right side
    3,871.36x = 11,235,096.20
  5. Step 5: Solve for x
    x = 11,235,096.20/3,871.36
  6. Step 6: Final answer
    x = 2,902.11

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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.