Home / 3,919.44-5,878.56-1,286.94

Finding the Fourth Proportional to 3,919.44, 5,878.56 and 1,286.94

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Solution

The fourth proportional to 3,919.44, 5,878.56 and 1,286.94 is: 1,930.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.44 : 5,878.56 = 1,286.94 : x
  2. Step 2: Convert to fraction form
    3,919.44/5,878.56 = 1,286.94/x
  3. Step 3: Cross multiply
    3,919.44x = 5,878.56 × 1,286.94
  4. Step 4: Simplify right side
    3,919.44x = 7,565,354.01
  5. Step 5: Solve for x
    x = 7,565,354.01/3,919.44
  6. Step 6: Final answer
    x = 1,930.21

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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.