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Finding the Fourth Proportional to 8,509.11, 12,755.88 and 3,579.10

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Solution

The fourth proportional to 8,509.11, 12,755.88 and 3,579.10 is: 5,365.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,509.11 : 12,755.88 = 3,579.10 : x
  2. Step 2: Convert to fraction form
    8,509.11/12,755.88 = 3,579.10/x
  3. Step 3: Cross multiply
    8,509.11x = 12,755.88 × 3,579.10
  4. Step 4: Simplify right side
    8,509.11x = 45,654,506.33
  5. Step 5: Solve for x
    x = 45,654,506.33/8,509.11
  6. Step 6: Final answer
    x = 5,365.37

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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.