Home / 3,786.92-5,676.72-1,938.90

Finding the Fourth Proportional to 3,786.92, 5,676.72 and 1,938.90

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Solution

The fourth proportional to 3,786.92, 5,676.72 and 1,938.90 is: 2,906.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.92 : 5,676.72 = 1,938.90 : x
  2. Step 2: Convert to fraction form
    3,786.92/5,676.72 = 1,938.90/x
  3. Step 3: Cross multiply
    3,786.92x = 5,676.72 × 1,938.90
  4. Step 4: Simplify right side
    3,786.92x = 11,006,592.41
  5. Step 5: Solve for x
    x = 11,006,592.41/3,786.92
  6. Step 6: Final answer
    x = 2,906.48

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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.