Home / 7,874.22-11,812.41-2,942.70

Finding the Fourth Proportional to 7,874.22, 11,812.41 and 2,942.70

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Solution

The fourth proportional to 7,874.22, 11,812.41 and 2,942.70 is: 4,414.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,874.22 : 11,812.41 = 2,942.70 : x
  2. Step 2: Convert to fraction form
    7,874.22/11,812.41 = 2,942.70/x
  3. Step 3: Cross multiply
    7,874.22x = 11,812.41 × 2,942.70
  4. Step 4: Simplify right side
    7,874.22x = 34,760,378.91
  5. Step 5: Solve for x
    x = 34,760,378.91/7,874.22
  6. Step 6: Final answer
    x = 4,414.45

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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.