Home / 3,889.53-5,830.79-2,640.55

Finding the Fourth Proportional to 3,889.53, 5,830.79 and 2,640.55

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Solution

The fourth proportional to 3,889.53, 5,830.79 and 2,640.55 is: 3,958.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.53 : 5,830.79 = 2,640.55 : x
  2. Step 2: Convert to fraction form
    3,889.53/5,830.79 = 2,640.55/x
  3. Step 3: Cross multiply
    3,889.53x = 5,830.79 × 2,640.55
  4. Step 4: Simplify right side
    3,889.53x = 15,396,451.09
  5. Step 5: Solve for x
    x = 15,396,451.09/3,889.53
  6. Step 6: Final answer
    x = 3,958.44

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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.