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Finding the Fourth Proportional to 8,227.78, 12,339.11 and 2,754.50

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Solution

The fourth proportional to 8,227.78, 12,339.11 and 2,754.50 is: 4,130.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,227.78 : 12,339.11 = 2,754.50 : x
  2. Step 2: Convert to fraction form
    8,227.78/12,339.11 = 2,754.50/x
  3. Step 3: Cross multiply
    8,227.78x = 12,339.11 × 2,754.50
  4. Step 4: Simplify right side
    8,227.78x = 33,988,078.50
  5. Step 5: Solve for x
    x = 33,988,078.50/8,227.78
  6. Step 6: Final answer
    x = 4,130.89

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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.