Home / 7,949.13-11,923.69-2,105.79

Finding the Fourth Proportional to 7,949.13, 11,923.69 and 2,105.79

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Solution

The fourth proportional to 7,949.13, 11,923.69 and 2,105.79 is: 3,158.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,949.13 : 11,923.69 = 2,105.79 : x
  2. Step 2: Convert to fraction form
    7,949.13/11,923.69 = 2,105.79/x
  3. Step 3: Cross multiply
    7,949.13x = 11,923.69 × 2,105.79
  4. Step 4: Simplify right side
    7,949.13x = 25,108,787.17
  5. Step 5: Solve for x
    x = 25,108,787.17/7,949.13
  6. Step 6: Final answer
    x = 3,158.68

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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.