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Finding the Fourth Proportional to 6,640.87, 9,958.12 and 3,868.33

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Solution

The fourth proportional to 6,640.87, 9,958.12 and 3,868.33 is: 5,800.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.87 : 9,958.12 = 3,868.33 : x
  2. Step 2: Convert to fraction form
    6,640.87/9,958.12 = 3,868.33/x
  3. Step 3: Cross multiply
    6,640.87x = 9,958.12 × 3,868.33
  4. Step 4: Simplify right side
    6,640.87x = 38,521,225.21
  5. Step 5: Solve for x
    x = 38,521,225.21/6,640.87
  6. Step 6: Final answer
    x = 5,800.63

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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.