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Finding the Fourth Proportional to 5,540, 8,310 and 2,254.88

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Solution

The fourth proportional to 5,540, 8,310 and 2,254.88 is: 3,382.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,540 : 8,310 = 2,254.88 : x
  2. Step 2: Convert to fraction form
    5,540/8,310 = 2,254.88/x
  3. Step 3: Cross multiply
    5,540x = 8,310 × 2,254.88
  4. Step 4: Simplify right side
    5,540x = 18,738,052.80
  5. Step 5: Solve for x
    x = 18,738,052.80/5,540
  6. Step 6: Final answer
    x = 3,382.32

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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.