Home / 8,138.09-12,207.14-2,942.75

Finding the Fourth Proportional to 8,138.09, 12,207.14 and 2,942.75

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Solution

The fourth proportional to 8,138.09, 12,207.14 and 2,942.75 is: 4,414.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.09 : 12,207.14 = 2,942.75 : x
  2. Step 2: Convert to fraction form
    8,138.09/12,207.14 = 2,942.75/x
  3. Step 3: Cross multiply
    8,138.09x = 12,207.14 × 2,942.75
  4. Step 4: Simplify right side
    8,138.09x = 35,922,561.24
  5. Step 5: Solve for x
    x = 35,922,561.24/8,138.09
  6. Step 6: Final answer
    x = 4,414.13

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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.