Home / 3,789.70-5,229.25-2,110.87

Finding the Fourth Proportional to 3,789.70, 5,229.25 and 2,110.87

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Solution

The fourth proportional to 3,789.70, 5,229.25 and 2,110.87 is: 2,912.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.70 : 5,229.25 = 2,110.87 : x
  2. Step 2: Convert to fraction form
    3,789.70/5,229.25 = 2,110.87/x
  3. Step 3: Cross multiply
    3,789.70x = 5,229.25 × 2,110.87
  4. Step 4: Simplify right side
    3,789.70x = 11,038,266.95
  5. Step 5: Solve for x
    x = 11,038,266.95/3,789.70
  6. Step 6: Final answer
    x = 2,912.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.