Home / 6,786.20-10,179.90-1,855.86

Finding the Fourth Proportional to 6,786.20, 10,179.90 and 1,855.86

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Solution

The fourth proportional to 6,786.20, 10,179.90 and 1,855.86 is: 2,783.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,786.20 : 10,179.90 = 1,855.86 : x
  2. Step 2: Convert to fraction form
    6,786.20/10,179.90 = 1,855.86/x
  3. Step 3: Cross multiply
    6,786.20x = 10,179.90 × 1,855.86
  4. Step 4: Simplify right side
    6,786.20x = 18,892,469.21
  5. Step 5: Solve for x
    x = 18,892,469.21/6,786.20
  6. Step 6: Final answer
    x = 2,783.96

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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.