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Finding the Fourth Proportional to 8,470.35, 12,704.88 and 2,626.80

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Solution

The fourth proportional to 8,470.35, 12,704.88 and 2,626.80 is: 3,940.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,470.35 : 12,704.88 = 2,626.80 : x
  2. Step 2: Convert to fraction form
    8,470.35/12,704.88 = 2,626.80/x
  3. Step 3: Cross multiply
    8,470.35x = 12,704.88 × 2,626.80
  4. Step 4: Simplify right side
    8,470.35x = 33,373,178.78
  5. Step 5: Solve for x
    x = 33,373,178.78/8,470.35
  6. Step 6: Final answer
    x = 3,940.00

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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.