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Finding the Fourth Proportional to 8,490.54, 12,736.39 and 2,250.48

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Solution

The fourth proportional to 8,490.54, 12,736.39 and 2,250.48 is: 3,375.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490.54 : 12,736.39 = 2,250.48 : x
  2. Step 2: Convert to fraction form
    8,490.54/12,736.39 = 2,250.48/x
  3. Step 3: Cross multiply
    8,490.54x = 12,736.39 × 2,250.48
  4. Step 4: Simplify right side
    8,490.54x = 28,662,990.97
  5. Step 5: Solve for x
    x = 28,662,990.97/8,490.54
  6. Step 6: Final answer
    x = 3,375.87

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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.