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Finding the Fourth Proportional to 8,455.44, 12,679 and 2,610.64

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Solution

The fourth proportional to 8,455.44, 12,679 and 2,610.64 is: 3,914.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.44 : 12,679 = 2,610.64 : x
  2. Step 2: Convert to fraction form
    8,455.44/12,679 = 2,610.64/x
  3. Step 3: Cross multiply
    8,455.44x = 12,679 × 2,610.64
  4. Step 4: Simplify right side
    8,455.44x = 33,100,304.56
  5. Step 5: Solve for x
    x = 33,100,304.56/8,455.44
  6. Step 6: Final answer
    x = 3,914.68

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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.