Home / 6,878.42-10,311.40-3,179.66

Finding the Fourth Proportional to 6,878.42, 10,311.40 and 3,179.66

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Solution

The fourth proportional to 6,878.42, 10,311.40 and 3,179.66 is: 4,766.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,878.42 : 10,311.40 = 3,179.66 : x
  2. Step 2: Convert to fraction form
    6,878.42/10,311.40 = 3,179.66/x
  3. Step 3: Cross multiply
    6,878.42x = 10,311.40 × 3,179.66
  4. Step 4: Simplify right side
    6,878.42x = 32,786,698.54
  5. Step 5: Solve for x
    x = 32,786,698.54/6,878.42
  6. Step 6: Final answer
    x = 4,766.60

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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.