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Finding the Fourth Proportional to 8,772.39, 13,162.23 and 3,839.49

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Solution

The fourth proportional to 8,772.39, 13,162.23 and 3,839.49 is: 5,760.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.39 : 13,162.23 = 3,839.49 : x
  2. Step 2: Convert to fraction form
    8,772.39/13,162.23 = 3,839.49/x
  3. Step 3: Cross multiply
    8,772.39x = 13,162.23 × 3,839.49
  4. Step 4: Simplify right side
    8,772.39x = 50,536,250.46
  5. Step 5: Solve for x
    x = 50,536,250.46/8,772.39
  6. Step 6: Final answer
    x = 5,760.83

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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.