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Finding the Fourth Proportional to 3,998.36, 5,997.53 and 1,400.69

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Solution

The fourth proportional to 3,998.36, 5,997.53 and 1,400.69 is: 2,101.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.36 : 5,997.53 = 1,400.69 : x
  2. Step 2: Convert to fraction form
    3,998.36/5,997.53 = 1,400.69/x
  3. Step 3: Cross multiply
    3,998.36x = 5,997.53 × 1,400.69
  4. Step 4: Simplify right side
    3,998.36x = 8,400,680.30
  5. Step 5: Solve for x
    x = 8,400,680.30/3,998.36
  6. Step 6: Final answer
    x = 2,101.03

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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.