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Finding the Fourth Proportional to 3,998.11, 5,997.16 and 1,401.05

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Solution

The fourth proportional to 3,998.11, 5,997.16 and 1,401.05 is: 2,101.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.11 : 5,997.16 = 1,401.05 : x
  2. Step 2: Convert to fraction form
    3,998.11/5,997.16 = 1,401.05/x
  3. Step 3: Cross multiply
    3,998.11x = 5,997.16 × 1,401.05
  4. Step 4: Simplify right side
    3,998.11x = 8,402,307.97
  5. Step 5: Solve for x
    x = 8,402,307.97/3,998.11
  6. Step 6: Final answer
    x = 2,101.57

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Similar ratio
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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.