Home / 3,187.82-4,780.83-1,107.29

Finding the Fourth Proportional to 3,187.82, 4,780.83 and 1,107.29

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Solution

The fourth proportional to 3,187.82, 4,780.83 and 1,107.29 is: 1,660.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.82 : 4,780.83 = 1,107.29 : x
  2. Step 2: Convert to fraction form
    3,187.82/4,780.83 = 1,107.29/x
  3. Step 3: Cross multiply
    3,187.82x = 4,780.83 × 1,107.29
  4. Step 4: Simplify right side
    3,187.82x = 5,293,765.25
  5. Step 5: Solve for x
    x = 5,293,765.25/3,187.82
  6. Step 6: Final answer
    x = 1,660.62

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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.