Home / 8,121.69-12,181.46-2,575.59

Finding the Fourth Proportional to 8,121.69, 12,181.46 and 2,575.59

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Solution

The fourth proportional to 8,121.69, 12,181.46 and 2,575.59 is: 3,863.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.69 : 12,181.46 = 2,575.59 : x
  2. Step 2: Convert to fraction form
    8,121.69/12,181.46 = 2,575.59/x
  3. Step 3: Cross multiply
    8,121.69x = 12,181.46 × 2,575.59
  4. Step 4: Simplify right side
    8,121.69x = 31,374,433.68
  5. Step 5: Solve for x
    x = 31,374,433.68/8,121.69
  6. Step 6: Final answer
    x = 3,863.04

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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.