Home / 8,122.78-12,183.38-2,579.75

Finding the Fourth Proportional to 8,122.78, 12,183.38 and 2,579.75

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Solution

The fourth proportional to 8,122.78, 12,183.38 and 2,579.75 is: 3,869.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.78 : 12,183.38 = 2,579.75 : x
  2. Step 2: Convert to fraction form
    8,122.78/12,183.38 = 2,579.75/x
  3. Step 3: Cross multiply
    8,122.78x = 12,183.38 × 2,579.75
  4. Step 4: Simplify right side
    8,122.78x = 31,430,056.10
  5. Step 5: Solve for x
    x = 31,430,056.10/8,122.78
  6. Step 6: Final answer
    x = 3,869.37

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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.