Home / 2,939.84-4,408.46-1,378.58

Finding the Fourth Proportional to 2,939.84, 4,408.46 and 1,378.58

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Solution

The fourth proportional to 2,939.84, 4,408.46 and 1,378.58 is: 2,067.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.84 : 4,408.46 = 1,378.58 : x
  2. Step 2: Convert to fraction form
    2,939.84/4,408.46 = 1,378.58/x
  3. Step 3: Cross multiply
    2,939.84x = 4,408.46 × 1,378.58
  4. Step 4: Simplify right side
    2,939.84x = 6,077,414.79
  5. Step 5: Solve for x
    x = 6,077,414.79/2,939.84
  6. Step 6: Final answer
    x = 2,067.26

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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.