Home / 3,871.43-5,342.55-2,103.02

Finding the Fourth Proportional to 3,871.43, 5,342.55 and 2,103.02

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Solution

The fourth proportional to 3,871.43, 5,342.55 and 2,103.02 is: 2,902.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.43 : 5,342.55 = 2,103.02 : x
  2. Step 2: Convert to fraction form
    3,871.43/5,342.55 = 2,103.02/x
  3. Step 3: Cross multiply
    3,871.43x = 5,342.55 × 2,103.02
  4. Step 4: Simplify right side
    3,871.43x = 11,235,489.50
  5. Step 5: Solve for x
    x = 11,235,489.50/3,871.43
  6. Step 6: Final answer
    x = 2,902.15

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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.