Home / 3,890.18-5,836.30-2,040.78

Finding the Fourth Proportional to 3,890.18, 5,836.30 and 2,040.78

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Solution

The fourth proportional to 3,890.18, 5,836.30 and 2,040.78 is: 3,061.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.18 : 5,836.30 = 2,040.78 : x
  2. Step 2: Convert to fraction form
    3,890.18/5,836.30 = 2,040.78/x
  3. Step 3: Cross multiply
    3,890.18x = 5,836.30 × 2,040.78
  4. Step 4: Simplify right side
    3,890.18x = 11,910,604.31
  5. Step 5: Solve for x
    x = 11,910,604.31/3,890.18
  6. Step 6: Final answer
    x = 3,061.71

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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.