Home / 3,871.68-5,342.94-2,103.32

Finding the Fourth Proportional to 3,871.68, 5,342.94 and 2,103.32

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Solution

The fourth proportional to 3,871.68, 5,342.94 and 2,103.32 is: 2,902.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.68 : 5,342.94 = 2,103.32 : x
  2. Step 2: Convert to fraction form
    3,871.68/5,342.94 = 2,103.32/x
  3. Step 3: Cross multiply
    3,871.68x = 5,342.94 × 2,103.32
  4. Step 4: Simplify right side
    3,871.68x = 11,237,885.85
  5. Step 5: Solve for x
    x = 11,237,885.85/3,871.68
  6. Step 6: Final answer
    x = 2,902.59

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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.