Home / 11,865.88-17,799.83-3,100.78

Finding the Fourth Proportional to 11,865.88, 17,799.83 and 3,100.78

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Solution

The fourth proportional to 11,865.88, 17,799.83 and 3,100.78 is: 4,651.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,865.88 : 17,799.83 = 3,100.78 : x
  2. Step 2: Convert to fraction form
    11,865.88/17,799.83 = 3,100.78/x
  3. Step 3: Cross multiply
    11,865.88x = 17,799.83 × 3,100.78
  4. Step 4: Simplify right side
    11,865.88x = 55,193,392.68
  5. Step 5: Solve for x
    x = 55,193,392.68/11,865.88
  6. Step 6: Final answer
    x = 4,651.44

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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.