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Finding the Fourth Proportional to 6,251.80, 8,628.42 and 3,894.70

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Solution

The fourth proportional to 6,251.80, 8,628.42 and 3,894.70 is: 5,375.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,251.80 : 8,628.42 = 3,894.70 : x
  2. Step 2: Convert to fraction form
    6,251.80/8,628.42 = 3,894.70/x
  3. Step 3: Cross multiply
    6,251.80x = 8,628.42 × 3,894.70
  4. Step 4: Simplify right side
    6,251.80x = 33,605,107.37
  5. Step 5: Solve for x
    x = 33,605,107.37/6,251.80
  6. Step 6: Final answer
    x = 5,375.27

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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.