Home / 5,481.43-8,219.10-2,190.80

Finding the Fourth Proportional to 5,481.43, 8,219.10 and 2,190.80

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Solution

The fourth proportional to 5,481.43, 8,219.10 and 2,190.80 is: 3,284.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,481.43 : 8,219.10 = 2,190.80 : x
  2. Step 2: Convert to fraction form
    5,481.43/8,219.10 = 2,190.80/x
  3. Step 3: Cross multiply
    5,481.43x = 8,219.10 × 2,190.80
  4. Step 4: Simplify right side
    5,481.43x = 18,006,404.28
  5. Step 5: Solve for x
    x = 18,006,404.28/5,481.43
  6. Step 6: Final answer
    x = 3,284.98

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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.