Home / 2,939.86-4,408.94-1,378.28

Finding the Fourth Proportional to 2,939.86, 4,408.94 and 1,378.28

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Solution

The fourth proportional to 2,939.86, 4,408.94 and 1,378.28 is: 2,067.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.86 : 4,408.94 = 1,378.28 : x
  2. Step 2: Convert to fraction form
    2,939.86/4,408.94 = 1,378.28/x
  3. Step 3: Cross multiply
    2,939.86x = 4,408.94 × 1,378.28
  4. Step 4: Simplify right side
    2,939.86x = 6,076,753.82
  5. Step 5: Solve for x
    x = 6,076,753.82/2,939.86
  6. Step 6: Final answer
    x = 2,067.02

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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.