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Finding the Fourth Proportional to 8,469.81, 12,705.95 and 2,626.89

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Solution

The fourth proportional to 8,469.81, 12,705.95 and 2,626.89 is: 3,940.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.81 : 12,705.95 = 2,626.89 : x
  2. Step 2: Convert to fraction form
    8,469.81/12,705.95 = 2,626.89/x
  3. Step 3: Cross multiply
    8,469.81x = 12,705.95 × 2,626.89
  4. Step 4: Simplify right side
    8,469.81x = 33,377,119.86
  5. Step 5: Solve for x
    x = 33,377,119.86/8,469.81
  6. Step 6: Final answer
    x = 3,940.72

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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.