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Finding the Fourth Proportional to 8,809.55, 13,211.15 and 2,568.31

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Solution

The fourth proportional to 8,809.55, 13,211.15 and 2,568.31 is: 3,851.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.55 : 13,211.15 = 2,568.31 : x
  2. Step 2: Convert to fraction form
    8,809.55/13,211.15 = 2,568.31/x
  3. Step 3: Cross multiply
    8,809.55x = 13,211.15 × 2,568.31
  4. Step 4: Simplify right side
    8,809.55x = 33,930,328.66
  5. Step 5: Solve for x
    x = 33,930,328.66/8,809.55
  6. Step 6: Final answer
    x = 3,851.54

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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.