Home / 3,879.25-5,817.16-1,105.29

Finding the Fourth Proportional to 3,879.25, 5,817.16 and 1,105.29

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Solution

The fourth proportional to 3,879.25, 5,817.16 and 1,105.29 is: 1,657.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.25 : 5,817.16 = 1,105.29 : x
  2. Step 2: Convert to fraction form
    3,879.25/5,817.16 = 1,105.29/x
  3. Step 3: Cross multiply
    3,879.25x = 5,817.16 × 1,105.29
  4. Step 4: Simplify right side
    3,879.25x = 6,429,648.79
  5. Step 5: Solve for x
    x = 6,429,648.79/3,879.25
  6. Step 6: Final answer
    x = 1,657.45

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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.