Home / 6,878.21-10,317.89-2,198.88

Finding the Fourth Proportional to 6,878.21, 10,317.89 and 2,198.88

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Solution

The fourth proportional to 6,878.21, 10,317.89 and 2,198.88 is: 3,298.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,878.21 : 10,317.89 = 2,198.88 : x
  2. Step 2: Convert to fraction form
    6,878.21/10,317.89 = 2,198.88/x
  3. Step 3: Cross multiply
    6,878.21x = 10,317.89 × 2,198.88
  4. Step 4: Simplify right side
    6,878.21x = 22,687,790.97
  5. Step 5: Solve for x
    x = 22,687,790.97/6,878.21
  6. Step 6: Final answer
    x = 3,298.50

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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.