Home / 6,919.38-10,378.96-3,219.54

Finding the Fourth Proportional to 6,919.38, 10,378.96 and 3,219.54

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Solution

The fourth proportional to 6,919.38, 10,378.96 and 3,219.54 is: 4,829.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.38 : 10,378.96 = 3,219.54 : x
  2. Step 2: Convert to fraction form
    6,919.38/10,378.96 = 3,219.54/x
  3. Step 3: Cross multiply
    6,919.38x = 10,378.96 × 3,219.54
  4. Step 4: Simplify right side
    6,919.38x = 33,415,476.88
  5. Step 5: Solve for x
    x = 33,415,476.88/6,919.38
  6. Step 6: Final answer
    x = 4,829.26

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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.