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Finding the Fourth Proportional to 8,615.16, 12,922.94 and 3,069.09

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Solution

The fourth proportional to 8,615.16, 12,922.94 and 3,069.09 is: 4,603.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.16 : 12,922.94 = 3,069.09 : x
  2. Step 2: Convert to fraction form
    8,615.16/12,922.94 = 3,069.09/x
  3. Step 3: Cross multiply
    8,615.16x = 12,922.94 × 3,069.09
  4. Step 4: Simplify right side
    8,615.16x = 39,661,673.60
  5. Step 5: Solve for x
    x = 39,661,673.60/8,615.16
  6. Step 6: Final answer
    x = 4,603.71

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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.