Home / 5,377.80-8,066.70-3,919.80

Finding the Fourth Proportional to 5,377.80, 8,066.70 and 3,919.80

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Solution

The fourth proportional to 5,377.80, 8,066.70 and 3,919.80 is: 5,879.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.80 : 8,066.70 = 3,919.80 : x
  2. Step 2: Convert to fraction form
    5,377.80/8,066.70 = 3,919.80/x
  3. Step 3: Cross multiply
    5,377.80x = 8,066.70 × 3,919.80
  4. Step 4: Simplify right side
    5,377.80x = 31,619,850.66
  5. Step 5: Solve for x
    x = 31,619,850.66/5,377.80
  6. Step 6: Final answer
    x = 5,879.70

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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.