Home / 3,789.66-5,687.15-2,122.05

Finding the Fourth Proportional to 3,789.66, 5,687.15 and 2,122.05

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Solution

The fourth proportional to 3,789.66, 5,687.15 and 2,122.05 is: 3,184.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.66 : 5,687.15 = 2,122.05 : x
  2. Step 2: Convert to fraction form
    3,789.66/5,687.15 = 2,122.05/x
  3. Step 3: Cross multiply
    3,789.66x = 5,687.15 × 2,122.05
  4. Step 4: Simplify right side
    3,789.66x = 12,068,406.05
  5. Step 5: Solve for x
    x = 12,068,406.05/3,789.66
  6. Step 6: Final answer
    x = 3,184.56

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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.