Home / 5,871.20-8,102.43-3,218.78

Finding the Fourth Proportional to 5,871.20, 8,102.43 and 3,218.78

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Solution

The fourth proportional to 5,871.20, 8,102.43 and 3,218.78 is: 4,442.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,871.20 : 8,102.43 = 3,218.78 : x
  2. Step 2: Convert to fraction form
    5,871.20/8,102.43 = 3,218.78/x
  3. Step 3: Cross multiply
    5,871.20x = 8,102.43 × 3,218.78
  4. Step 4: Simplify right side
    5,871.20x = 26,079,959.89
  5. Step 5: Solve for x
    x = 26,079,959.89/5,871.20
  6. Step 6: Final answer
    x = 4,442.02

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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.