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Finding the Fourth Proportional to 8,626.77, 12,942.88 and 3,079.99

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Solution

The fourth proportional to 8,626.77, 12,942.88 and 3,079.99 is: 4,620.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,626.77 : 12,942.88 = 3,079.99 : x
  2. Step 2: Convert to fraction form
    8,626.77/12,942.88 = 3,079.99/x
  3. Step 3: Cross multiply
    8,626.77x = 12,942.88 × 3,079.99
  4. Step 4: Simplify right side
    8,626.77x = 39,863,876.26
  5. Step 5: Solve for x
    x = 39,863,876.26/8,626.77
  6. Step 6: Final answer
    x = 4,620.95

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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.