Home / 8,121.49-12,183.01-2,278.09

Finding the Fourth Proportional to 8,121.49, 12,183.01 and 2,278.09

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Solution

The fourth proportional to 8,121.49, 12,183.01 and 2,278.09 is: 3,417.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.49 : 12,183.01 = 2,278.09 : x
  2. Step 2: Convert to fraction form
    8,121.49/12,183.01 = 2,278.09/x
  3. Step 3: Cross multiply
    8,121.49x = 12,183.01 × 2,278.09
  4. Step 4: Simplify right side
    8,121.49x = 27,753,993.25
  5. Step 5: Solve for x
    x = 27,753,993.25/8,121.49
  6. Step 6: Final answer
    x = 3,417.35

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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.