Home / 8,121.36-12,180.60-2,276.56

Finding the Fourth Proportional to 8,121.36, 12,180.60 and 2,276.56

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Solution

The fourth proportional to 8,121.36, 12,180.60 and 2,276.56 is: 3,414.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.36 : 12,180.60 = 2,276.56 : x
  2. Step 2: Convert to fraction form
    8,121.36/12,180.60 = 2,276.56/x
  3. Step 3: Cross multiply
    8,121.36x = 12,180.60 × 2,276.56
  4. Step 4: Simplify right side
    8,121.36x = 27,729,866.74
  5. Step 5: Solve for x
    x = 27,729,866.74/8,121.36
  6. Step 6: Final answer
    x = 3,414.44

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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.