Home / 6,919.80-10,382.12-4,319.68

Finding the Fourth Proportional to 6,919.80, 10,382.12 and 4,319.68

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Solution

The fourth proportional to 6,919.80, 10,382.12 and 4,319.68 is: 6,481.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.80 : 10,382.12 = 4,319.68 : x
  2. Step 2: Convert to fraction form
    6,919.80/10,382.12 = 4,319.68/x
  3. Step 3: Cross multiply
    6,919.80x = 10,382.12 × 4,319.68
  4. Step 4: Simplify right side
    6,919.80x = 44,847,436.12
  5. Step 5: Solve for x
    x = 44,847,436.12/6,919.80
  6. Step 6: Final answer
    x = 6,481.03

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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.