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Finding the Fourth Proportional to 2,665.11, 3,997.12 and 717.33

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Solution

The fourth proportional to 2,665.11, 3,997.12 and 717.33 is: 1,075.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665.11 : 3,997.12 = 717.33 : x
  2. Step 2: Convert to fraction form
    2,665.11/3,997.12 = 717.33/x
  3. Step 3: Cross multiply
    2,665.11x = 3,997.12 × 717.33
  4. Step 4: Simplify right side
    2,665.11x = 2,867,254.09
  5. Step 5: Solve for x
    x = 2,867,254.09/2,665.11
  6. Step 6: Final answer
    x = 1,075.85

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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.