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Finding the Fourth Proportional to 6,768.54, 9,340.64 and 3,936.06

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Solution

The fourth proportional to 6,768.54, 9,340.64 and 3,936.06 is: 5,431.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,768.54 : 9,340.64 = 3,936.06 : x
  2. Step 2: Convert to fraction form
    6,768.54/9,340.64 = 3,936.06/x
  3. Step 3: Cross multiply
    6,768.54x = 9,340.64 × 3,936.06
  4. Step 4: Simplify right side
    6,768.54x = 36,765,319.48
  5. Step 5: Solve for x
    x = 36,765,319.48/6,768.54
  6. Step 6: Final answer
    x = 5,431.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.