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Finding the Fourth Proportional to 8,408.80, 12,612.93 and 3,474.70

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Solution

The fourth proportional to 8,408.80, 12,612.93 and 3,474.70 is: 5,211.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.80 : 12,612.93 = 3,474.70 : x
  2. Step 2: Convert to fraction form
    8,408.80/12,612.93 = 3,474.70/x
  3. Step 3: Cross multiply
    8,408.80x = 12,612.93 × 3,474.70
  4. Step 4: Simplify right side
    8,408.80x = 43,826,147.87
  5. Step 5: Solve for x
    x = 43,826,147.87/8,408.80
  6. Step 6: Final answer
    x = 5,211.94

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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.