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Finding the Fourth Proportional to 6,660.28, 9,976.36 and 4,019.56

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Solution

The fourth proportional to 6,660.28, 9,976.36 and 4,019.56 is: 6,020.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,660.28 : 9,976.36 = 4,019.56 : x
  2. Step 2: Convert to fraction form
    6,660.28/9,976.36 = 4,019.56/x
  3. Step 3: Cross multiply
    6,660.28x = 9,976.36 × 4,019.56
  4. Step 4: Simplify right side
    6,660.28x = 40,100,577.60
  5. Step 5: Solve for x
    x = 40,100,577.60/6,660.28
  6. Step 6: Final answer
    x = 6,020.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.