Home / 6,121.39-8,447.47-3,469.32

Finding the Fourth Proportional to 6,121.39, 8,447.47 and 3,469.32

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Solution

The fourth proportional to 6,121.39, 8,447.47 and 3,469.32 is: 4,787.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.39 : 8,447.47 = 3,469.32 : x
  2. Step 2: Convert to fraction form
    6,121.39/8,447.47 = 3,469.32/x
  3. Step 3: Cross multiply
    6,121.39x = 8,447.47 × 3,469.32
  4. Step 4: Simplify right side
    6,121.39x = 29,306,976.62
  5. Step 5: Solve for x
    x = 29,306,976.62/6,121.39
  6. Step 6: Final answer
    x = 4,787.63

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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.