Home / 7,968.78-11,953.17-3,286.78

Finding the Fourth Proportional to 7,968.78, 11,953.17 and 3,286.78

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Solution

The fourth proportional to 7,968.78, 11,953.17 and 3,286.78 is: 4,930.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,968.78 : 11,953.17 = 3,286.78 : x
  2. Step 2: Convert to fraction form
    7,968.78/11,953.17 = 3,286.78/x
  3. Step 3: Cross multiply
    7,968.78x = 11,953.17 × 3,286.78
  4. Step 4: Simplify right side
    7,968.78x = 39,287,410.21
  5. Step 5: Solve for x
    x = 39,287,410.21/7,968.78
  6. Step 6: Final answer
    x = 4,930.17

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Similar ratio
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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.