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Finding the Fourth Proportional to 8,615.79, 12,924 and 3,067.09

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Solution

The fourth proportional to 8,615.79, 12,924 and 3,067.09 is: 4,600.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.79 : 12,924 = 3,067.09 : x
  2. Step 2: Convert to fraction form
    8,615.79/12,924 = 3,067.09/x
  3. Step 3: Cross multiply
    8,615.79x = 12,924 × 3,067.09
  4. Step 4: Simplify right side
    8,615.79x = 39,639,038.85
  5. Step 5: Solve for x
    x = 39,639,038.85/8,615.79
  6. Step 6: Final answer
    x = 4,600.74

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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.