Home / 7,983.18-11,974.79-2,789.05

Finding the Fourth Proportional to 7,983.18, 11,974.79 and 2,789.05

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Solution

The fourth proportional to 7,983.18, 11,974.79 and 2,789.05 is: 4,183.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.18 : 11,974.79 = 2,789.05 : x
  2. Step 2: Convert to fraction form
    7,983.18/11,974.79 = 2,789.05/x
  3. Step 3: Cross multiply
    7,983.18x = 11,974.79 × 2,789.05
  4. Step 4: Simplify right side
    7,983.18x = 33,398,288.05
  5. Step 5: Solve for x
    x = 33,398,288.05/7,983.18
  6. Step 6: Final answer
    x = 4,183.58

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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.