Home / 5,481.28-8,216.80-2,196.80

Finding the Fourth Proportional to 5,481.28, 8,216.80 and 2,196.80

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Solution

The fourth proportional to 5,481.28, 8,216.80 and 2,196.80 is: 3,293.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,481.28 : 8,216.80 = 2,196.80 : x
  2. Step 2: Convert to fraction form
    5,481.28/8,216.80 = 2,196.80/x
  3. Step 3: Cross multiply
    5,481.28x = 8,216.80 × 2,196.80
  4. Step 4: Simplify right side
    5,481.28x = 18,050,666.24
  5. Step 5: Solve for x
    x = 18,050,666.24/5,481.28
  6. Step 6: Final answer
    x = 3,293.15

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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.