Home / 6,878.12-10,318.39-2,198.54

Finding the Fourth Proportional to 6,878.12, 10,318.39 and 2,198.54

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Solution

The fourth proportional to 6,878.12, 10,318.39 and 2,198.54 is: 3,298.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,878.12 : 10,318.39 = 2,198.54 : x
  2. Step 2: Convert to fraction form
    6,878.12/10,318.39 = 2,198.54/x
  3. Step 3: Cross multiply
    6,878.12x = 10,318.39 × 2,198.54
  4. Step 4: Simplify right side
    6,878.12x = 22,685,413.45
  5. Step 5: Solve for x
    x = 22,685,413.45/6,878.12
  6. Step 6: Final answer
    x = 3,298.20

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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.