Home / 7,908.12-11,863.80-2,712.78

Finding the Fourth Proportional to 7,908.12, 11,863.80 and 2,712.78

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Solution

The fourth proportional to 7,908.12, 11,863.80 and 2,712.78 is: 4,069.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.12 : 11,863.80 = 2,712.78 : x
  2. Step 2: Convert to fraction form
    7,908.12/11,863.80 = 2,712.78/x
  3. Step 3: Cross multiply
    7,908.12x = 11,863.80 × 2,712.78
  4. Step 4: Simplify right side
    7,908.12x = 32,183,879.36
  5. Step 5: Solve for x
    x = 32,183,879.36/7,908.12
  6. Step 6: Final answer
    x = 4,069.73

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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.