Home / 3,871.84-5,343.12-2,103.44

Finding the Fourth Proportional to 3,871.84, 5,343.12 and 2,103.44

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Solution

The fourth proportional to 3,871.84, 5,343.12 and 2,103.44 is: 2,902.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.84 : 5,343.12 = 2,103.44 : x
  2. Step 2: Convert to fraction form
    3,871.84/5,343.12 = 2,103.44/x
  3. Step 3: Cross multiply
    3,871.84x = 5,343.12 × 2,103.44
  4. Step 4: Simplify right side
    3,871.84x = 11,238,932.33
  5. Step 5: Solve for x
    x = 11,238,932.33/3,871.84
  6. Step 6: Final answer
    x = 2,902.74

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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.