Home / 7,961.39-11,942.69-2,415.18

Finding the Fourth Proportional to 7,961.39, 11,942.69 and 2,415.18

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Solution

The fourth proportional to 7,961.39, 11,942.69 and 2,415.18 is: 3,622.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.39 : 11,942.69 = 2,415.18 : x
  2. Step 2: Convert to fraction form
    7,961.39/11,942.69 = 2,415.18/x
  3. Step 3: Cross multiply
    7,961.39x = 11,942.69 × 2,415.18
  4. Step 4: Simplify right side
    7,961.39x = 28,843,733.96
  5. Step 5: Solve for x
    x = 28,843,733.96/7,961.39
  6. Step 6: Final answer
    x = 3,622.95

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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.