Home / 5,919.78-8,168.86-3,401.90

Finding the Fourth Proportional to 5,919.78, 8,168.86 and 3,401.90

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Solution

The fourth proportional to 5,919.78, 8,168.86 and 3,401.90 is: 4,694.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,919.78 : 8,168.86 = 3,401.90 : x
  2. Step 2: Convert to fraction form
    5,919.78/8,168.86 = 3,401.90/x
  3. Step 3: Cross multiply
    5,919.78x = 8,168.86 × 3,401.90
  4. Step 4: Simplify right side
    5,919.78x = 27,789,586.98
  5. Step 5: Solve for x
    x = 27,789,586.98/5,919.78
  6. Step 6: Final answer
    x = 4,694.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.