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Finding the Fourth Proportional to 8,669.03, 13,005.23 and 3,122.82

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Solution

The fourth proportional to 8,669.03, 13,005.23 and 3,122.82 is: 4,684.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.03 : 13,005.23 = 3,122.82 : x
  2. Step 2: Convert to fraction form
    8,669.03/13,005.23 = 3,122.82/x
  3. Step 3: Cross multiply
    8,669.03x = 13,005.23 × 3,122.82
  4. Step 4: Simplify right side
    8,669.03x = 40,612,976.73
  5. Step 5: Solve for x
    x = 40,612,976.73/8,669.03
  6. Step 6: Final answer
    x = 4,684.84

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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.