Home / 3,871.29-5,339.55-2,380.02

Finding the Fourth Proportional to 3,871.29, 5,339.55 and 2,380.02

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Solution

The fourth proportional to 3,871.29, 5,339.55 and 2,380.02 is: 3,282.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.29 : 5,339.55 = 2,380.02 : x
  2. Step 2: Convert to fraction form
    3,871.29/5,339.55 = 2,380.02/x
  3. Step 3: Cross multiply
    3,871.29x = 5,339.55 × 2,380.02
  4. Step 4: Simplify right side
    3,871.29x = 12,708,224.69
  5. Step 5: Solve for x
    x = 12,708,224.69/3,871.29
  6. Step 6: Final answer
    x = 3,282.68

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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.