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Finding the Fourth Proportional to 8,615.78, 12,924.88 and 3,067.94

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Solution

The fourth proportional to 8,615.78, 12,924.88 and 3,067.94 is: 4,602.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.78 : 12,924.88 = 3,067.94 : x
  2. Step 2: Convert to fraction form
    8,615.78/12,924.88 = 3,067.94/x
  3. Step 3: Cross multiply
    8,615.78x = 12,924.88 × 3,067.94
  4. Step 4: Simplify right side
    8,615.78x = 39,652,725.54
  5. Step 5: Solve for x
    x = 39,652,725.54/8,615.78
  6. Step 6: Final answer
    x = 4,602.34

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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.