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Finding the Fourth Proportional to 2,940.62, 4,410.94 and 1,091.74

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Solution

The fourth proportional to 2,940.62, 4,410.94 and 1,091.74 is: 1,637.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.62 : 4,410.94 = 1,091.74 : x
  2. Step 2: Convert to fraction form
    2,940.62/4,410.94 = 1,091.74/x
  3. Step 3: Cross multiply
    2,940.62x = 4,410.94 × 1,091.74
  4. Step 4: Simplify right side
    2,940.62x = 4,815,599.64
  5. Step 5: Solve for x
    x = 4,815,599.64/2,940.62
  6. Step 6: Final answer
    x = 1,637.61

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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.