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Finding the Fourth Proportional to 3,898.62, 5,850.26 and 1,399.60

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Solution

The fourth proportional to 3,898.62, 5,850.26 and 1,399.60 is: 2,100.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.62 : 5,850.26 = 1,399.60 : x
  2. Step 2: Convert to fraction form
    3,898.62/5,850.26 = 1,399.60/x
  3. Step 3: Cross multiply
    3,898.62x = 5,850.26 × 1,399.60
  4. Step 4: Simplify right side
    3,898.62x = 8,188,023.90
  5. Step 5: Solve for x
    x = 8,188,023.90/3,898.62
  6. Step 6: Final answer
    x = 2,100.24

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1.5x scale

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.