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Finding the Fourth Proportional to 6,122.39, 8,447.90 and 3,469.64

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Solution

The fourth proportional to 6,122.39, 8,447.90 and 3,469.64 is: 4,787.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,122.39 : 8,447.90 = 3,469.64 : x
  2. Step 2: Convert to fraction form
    6,122.39/8,447.90 = 3,469.64/x
  3. Step 3: Cross multiply
    6,122.39x = 8,447.90 × 3,469.64
  4. Step 4: Simplify right side
    6,122.39x = 29,311,112.17
  5. Step 5: Solve for x
    x = 29,311,112.17/6,122.39
  6. Step 6: Final answer
    x = 4,787.53

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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.