Home / 3,889.20-5,836.79-2,851.86

Finding the Fourth Proportional to 3,889.20, 5,836.79 and 2,851.86

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Solution

The fourth proportional to 3,889.20, 5,836.79 and 2,851.86 is: 4,279.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.20 : 5,836.79 = 2,851.86 : x
  2. Step 2: Convert to fraction form
    3,889.20/5,836.79 = 2,851.86/x
  3. Step 3: Cross multiply
    3,889.20x = 5,836.79 × 2,851.86
  4. Step 4: Simplify right side
    3,889.20x = 16,645,693.67
  5. Step 5: Solve for x
    x = 16,645,693.67/3,889.20
  6. Step 6: Final answer
    x = 4,279.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.