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Finding the Fourth Proportional to 8,143.52, 11,243.12 and 6,251.49

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Solution

The fourth proportional to 8,143.52, 11,243.12 and 6,251.49 is: 8,630.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,143.52 : 11,243.12 = 6,251.49 : x
  2. Step 2: Convert to fraction form
    8,143.52/11,243.12 = 6,251.49/x
  3. Step 3: Cross multiply
    8,143.52x = 11,243.12 × 6,251.49
  4. Step 4: Simplify right side
    8,143.52x = 70,286,220.99
  5. Step 5: Solve for x
    x = 70,286,220.99/8,143.52
  6. Step 6: Final answer
    x = 8,630.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.