Home / 3,879.16-5,355.30-3,114.62

Finding the Fourth Proportional to 3,879.16, 5,355.30 and 3,114.62

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Solution

The fourth proportional to 3,879.16, 5,355.30 and 3,114.62 is: 4,299.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.16 : 5,355.30 = 3,114.62 : x
  2. Step 2: Convert to fraction form
    3,879.16/5,355.30 = 3,114.62/x
  3. Step 3: Cross multiply
    3,879.16x = 5,355.30 × 3,114.62
  4. Step 4: Simplify right side
    3,879.16x = 16,679,724.49
  5. Step 5: Solve for x
    x = 16,679,724.49/3,879.16
  6. Step 6: Final answer
    x = 4,299.83

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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.