Home / 7,983.09-11,972.07-2,787.75

Finding the Fourth Proportional to 7,983.09, 11,972.07 and 2,787.75

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Solution

The fourth proportional to 7,983.09, 11,972.07 and 2,787.75 is: 4,180.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.09 : 11,972.07 = 2,787.75 : x
  2. Step 2: Convert to fraction form
    7,983.09/11,972.07 = 2,787.75/x
  3. Step 3: Cross multiply
    7,983.09x = 11,972.07 × 2,787.75
  4. Step 4: Simplify right side
    7,983.09x = 33,375,138.14
  5. Step 5: Solve for x
    x = 33,375,138.14/7,983.09
  6. Step 6: Final answer
    x = 4,180.73

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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.