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Finding the Fourth Proportional to 6,855.80, 10,288.22 and 3,157.88

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Solution

The fourth proportional to 6,855.80, 10,288.22 and 3,157.88 is: 4,738.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,855.80 : 10,288.22 = 3,157.88 : x
  2. Step 2: Convert to fraction form
    6,855.80/10,288.22 = 3,157.88/x
  3. Step 3: Cross multiply
    6,855.80x = 10,288.22 × 3,157.88
  4. Step 4: Simplify right side
    6,855.80x = 32,488,896.94
  5. Step 5: Solve for x
    x = 32,488,896.94/6,855.80
  6. Step 6: Final answer
    x = 4,738.90

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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.