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Finding the Fourth Proportional to 5,497.20, 8,244.20 and 1,986.80

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Solution

The fourth proportional to 5,497.20, 8,244.20 and 1,986.80 is: 2,979.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,497.20 : 8,244.20 = 1,986.80 : x
  2. Step 2: Convert to fraction form
    5,497.20/8,244.20 = 1,986.80/x
  3. Step 3: Cross multiply
    5,497.20x = 8,244.20 × 1,986.80
  4. Step 4: Simplify right side
    5,497.20x = 16,379,576.56
  5. Step 5: Solve for x
    x = 16,379,576.56/5,497.20
  6. Step 6: Final answer
    x = 2,979.62

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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.