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Finding the Fourth Proportional to 6,850.80, 9,454 and 3,866.60

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Solution

The fourth proportional to 6,850.80, 9,454 and 3,866.60 is: 5,335.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,850.80 : 9,454 = 3,866.60 : x
  2. Step 2: Convert to fraction form
    6,850.80/9,454 = 3,866.60/x
  3. Step 3: Cross multiply
    6,850.80x = 9,454 × 3,866.60
  4. Step 4: Simplify right side
    6,850.80x = 36,554,836.40
  5. Step 5: Solve for x
    x = 36,554,836.40/6,850.80
  6. Step 6: Final answer
    x = 5,335.85

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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.