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Finding the Fourth Proportional to 3,993.52, 5,990.82 and 1,396.12

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Solution

The fourth proportional to 3,993.52, 5,990.82 and 1,396.12 is: 2,094.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.52 : 5,990.82 = 1,396.12 : x
  2. Step 2: Convert to fraction form
    3,993.52/5,990.82 = 1,396.12/x
  3. Step 3: Cross multiply
    3,993.52x = 5,990.82 × 1,396.12
  4. Step 4: Simplify right side
    3,993.52x = 8,363,903.62
  5. Step 5: Solve for x
    x = 8,363,903.62/3,993.52
  6. Step 6: Final answer
    x = 2,094.37

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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.