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Finding the Fourth Proportional to 8,469.15, 12,704.15 and 5,351.77

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Solution

The fourth proportional to 8,469.15, 12,704.15 and 5,351.77 is: 8,027.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.15 : 12,704.15 = 5,351.77 : x
  2. Step 2: Convert to fraction form
    8,469.15/12,704.15 = 5,351.77/x
  3. Step 3: Cross multiply
    8,469.15x = 12,704.15 × 5,351.77
  4. Step 4: Simplify right side
    8,469.15x = 67,989,688.85
  5. Step 5: Solve for x
    x = 67,989,688.85/8,469.15
  6. Step 6: Final answer
    x = 8,027.92

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1.5x scale

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.