Home / 8,122.36-12,183.72-2,278.84

Finding the Fourth Proportional to 8,122.36, 12,183.72 and 2,278.84

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Solution

The fourth proportional to 8,122.36, 12,183.72 and 2,278.84 is: 3,418.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.36 : 12,183.72 = 2,278.84 : x
  2. Step 2: Convert to fraction form
    8,122.36/12,183.72 = 2,278.84/x
  3. Step 3: Cross multiply
    8,122.36x = 12,183.72 × 2,278.84
  4. Step 4: Simplify right side
    8,122.36x = 27,764,748.48
  5. Step 5: Solve for x
    x = 27,764,748.48/8,122.36
  6. Step 6: Final answer
    x = 3,418.31

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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.