Home / 6,872.20-10,286.70-4,928.20

Finding the Fourth Proportional to 6,872.20, 10,286.70 and 4,928.20

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Solution

The fourth proportional to 6,872.20, 10,286.70 and 4,928.20 is: 7,376.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.20 : 10,286.70 = 4,928.20 : x
  2. Step 2: Convert to fraction form
    6,872.20/10,286.70 = 4,928.20/x
  3. Step 3: Cross multiply
    6,872.20x = 10,286.70 × 4,928.20
  4. Step 4: Simplify right side
    6,872.20x = 50,694,914.94
  5. Step 5: Solve for x
    x = 50,694,914.94/6,872.20
  6. Step 6: Final answer
    x = 7,376.81

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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.