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Finding the Fourth Proportional to 8,138.03, 12,207.86 and 3,756.74

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Solution

The fourth proportional to 8,138.03, 12,207.86 and 3,756.74 is: 5,635.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.03 : 12,207.86 = 3,756.74 : x
  2. Step 2: Convert to fraction form
    8,138.03/12,207.86 = 3,756.74/x
  3. Step 3: Cross multiply
    8,138.03x = 12,207.86 × 3,756.74
  4. Step 4: Simplify right side
    8,138.03x = 45,861,755.98
  5. Step 5: Solve for x
    x = 45,861,755.98/8,138.03
  6. Step 6: Final answer
    x = 5,635.49

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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.