Home / 8,121.96-12,183.37-2,575.74

Finding the Fourth Proportional to 8,121.96, 12,183.37 and 2,575.74

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Solution

The fourth proportional to 8,121.96, 12,183.37 and 2,575.74 is: 3,863.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.96 : 12,183.37 = 2,575.74 : x
  2. Step 2: Convert to fraction form
    8,121.96/12,183.37 = 2,575.74/x
  3. Step 3: Cross multiply
    8,121.96x = 12,183.37 × 2,575.74
  4. Step 4: Simplify right side
    8,121.96x = 31,381,148.84
  5. Step 5: Solve for x
    x = 31,381,148.84/8,121.96
  6. Step 6: Final answer
    x = 3,863.74

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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.