Home / 3,871.44-5,342.40-2,102.94

Finding the Fourth Proportional to 3,871.44, 5,342.40 and 2,102.94

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Solution

The fourth proportional to 3,871.44, 5,342.40 and 2,102.94 is: 2,901.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.44 : 5,342.40 = 2,102.94 : x
  2. Step 2: Convert to fraction form
    3,871.44/5,342.40 = 2,102.94/x
  3. Step 3: Cross multiply
    3,871.44x = 5,342.40 × 2,102.94
  4. Step 4: Simplify right side
    3,871.44x = 11,234,746.66
  5. Step 5: Solve for x
    x = 11,234,746.66/3,871.44
  6. Step 6: Final answer
    x = 2,901.96

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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.