Home / 8,216.40-12,324.60-3,286.80

Finding the Fourth Proportional to 8,216.40, 12,324.60 and 3,286.80

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Solution

The fourth proportional to 8,216.40, 12,324.60 and 3,286.80 is: 4,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,216.40 : 12,324.60 = 3,286.80 : x
  2. Step 2: Convert to fraction form
    8,216.40/12,324.60 = 3,286.80/x
  3. Step 3: Cross multiply
    8,216.40x = 12,324.60 × 3,286.80
  4. Step 4: Simplify right side
    8,216.40x = 40,508,495.28
  5. Step 5: Solve for x
    x = 40,508,495.28/8,216.40
  6. Step 6: Final answer
    x = 4,930.20

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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.