Home / 3,789.32-5,679.05-1,938.87

Finding the Fourth Proportional to 3,789.32, 5,679.05 and 1,938.87

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Solution

The fourth proportional to 3,789.32, 5,679.05 and 1,938.87 is: 2,905.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.32 : 5,679.05 = 1,938.87 : x
  2. Step 2: Convert to fraction form
    3,789.32/5,679.05 = 1,938.87/x
  3. Step 3: Cross multiply
    3,789.32x = 5,679.05 × 1,938.87
  4. Step 4: Simplify right side
    3,789.32x = 11,010,929.98
  5. Step 5: Solve for x
    x = 11,010,929.98/3,789.32
  6. Step 6: Final answer
    x = 2,905.78

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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.