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Finding the Fourth Proportional to 6,940.66, 9,578.11 and 3,796.84

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Solution

The fourth proportional to 6,940.66, 9,578.11 and 3,796.84 is: 5,239.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,940.66 : 9,578.11 = 3,796.84 : x
  2. Step 2: Convert to fraction form
    6,940.66/9,578.11 = 3,796.84/x
  3. Step 3: Cross multiply
    6,940.66x = 9,578.11 × 3,796.84
  4. Step 4: Simplify right side
    6,940.66x = 36,366,551.17
  5. Step 5: Solve for x
    x = 36,366,551.17/6,940.66
  6. Step 6: Final answer
    x = 5,239.64

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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.