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Finding the Fourth Proportional to 3,998.33, 5,992.26 and 2,147.28

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Solution

The fourth proportional to 3,998.33, 5,992.26 and 2,147.28 is: 3,218.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.33 : 5,992.26 = 2,147.28 : x
  2. Step 2: Convert to fraction form
    3,998.33/5,992.26 = 2,147.28/x
  3. Step 3: Cross multiply
    3,998.33x = 5,992.26 × 2,147.28
  4. Step 4: Simplify right side
    3,998.33x = 12,867,060.05
  5. Step 5: Solve for x
    x = 12,867,060.05/3,998.33
  6. Step 6: Final answer
    x = 3,218.11

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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.