Home / 8,151.20-12,227.66-3,220.16

Finding the Fourth Proportional to 8,151.20, 12,227.66 and 3,220.16

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Solution

The fourth proportional to 8,151.20, 12,227.66 and 3,220.16 is: 4,830.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,151.20 : 12,227.66 = 3,220.16 : x
  2. Step 2: Convert to fraction form
    8,151.20/12,227.66 = 3,220.16/x
  3. Step 3: Cross multiply
    8,151.20x = 12,227.66 × 3,220.16
  4. Step 4: Simplify right side
    8,151.20x = 39,375,021.63
  5. Step 5: Solve for x
    x = 39,375,021.63/8,151.20
  6. Step 6: Final answer
    x = 4,830.58

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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.