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Finding the Fourth Proportional to 8,470.49, 12,707.42 and 2,626.88

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Solution

The fourth proportional to 8,470.49, 12,707.42 and 2,626.88 is: 3,940.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,470.49 : 12,707.42 = 2,626.88 : x
  2. Step 2: Convert to fraction form
    8,470.49/12,707.42 = 2,626.88/x
  3. Step 3: Cross multiply
    8,470.49x = 12,707.42 × 2,626.88
  4. Step 4: Simplify right side
    8,470.49x = 33,380,790.78
  5. Step 5: Solve for x
    x = 33,380,790.78/8,470.49
  6. Step 6: Final answer
    x = 3,940.84

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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.