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Finding the Fourth Proportional to 7,485.11, 11,229.11 and 2,867.75

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Solution

The fourth proportional to 7,485.11, 11,229.11 and 2,867.75 is: 4,302.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.11 : 11,229.11 = 2,867.75 : x
  2. Step 2: Convert to fraction form
    7,485.11/11,229.11 = 2,867.75/x
  3. Step 3: Cross multiply
    7,485.11x = 11,229.11 × 2,867.75
  4. Step 4: Simplify right side
    7,485.11x = 32,202,265.86
  5. Step 5: Solve for x
    x = 32,202,265.86/7,485.11
  6. Step 6: Final answer
    x = 4,302.18

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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.