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Finding the Fourth Proportional to 3,350.40, 5,025.12 and 885

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Solution

The fourth proportional to 3,350.40, 5,025.12 and 885 is: 1,327.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,350.40 : 5,025.12 = 885 : x
  2. Step 2: Convert to fraction form
    3,350.40/5,025.12 = 885/x
  3. Step 3: Cross multiply
    3,350.40x = 5,025.12 × 885
  4. Step 4: Simplify right side
    3,350.40x = 4,447,231.20
  5. Step 5: Solve for x
    x = 4,447,231.20/3,350.40
  6. Step 6: Final answer
    x = 1,327.37

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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.