Home / 5,478.20-8,217.30-2,016.80

Finding the Fourth Proportional to 5,478.20, 8,217.30 and 2,016.80

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Solution

The fourth proportional to 5,478.20, 8,217.30 and 2,016.80 is: 3,025.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.20 : 8,217.30 = 2,016.80 : x
  2. Step 2: Convert to fraction form
    5,478.20/8,217.30 = 2,016.80/x
  3. Step 3: Cross multiply
    5,478.20x = 8,217.30 × 2,016.80
  4. Step 4: Simplify right side
    5,478.20x = 16,572,650.64
  5. Step 5: Solve for x
    x = 16,572,650.64/5,478.20
  6. Step 6: Final answer
    x = 3,025.20

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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.