Home / 3,878.48-5,817.22-1,245.78

Finding the Fourth Proportional to 3,878.48, 5,817.22 and 1,245.78

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Solution

The fourth proportional to 3,878.48, 5,817.22 and 1,245.78 is: 1,868.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.48 : 5,817.22 = 1,245.78 : x
  2. Step 2: Convert to fraction form
    3,878.48/5,817.22 = 1,245.78/x
  3. Step 3: Cross multiply
    3,878.48x = 5,817.22 × 1,245.78
  4. Step 4: Simplify right side
    3,878.48x = 7,246,976.33
  5. Step 5: Solve for x
    x = 7,246,976.33/3,878.48
  6. Step 6: Final answer
    x = 1,868.51

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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.