Home / 2,939.45-4,408.96-1,379.81

Finding the Fourth Proportional to 2,939.45, 4,408.96 and 1,379.81

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Solution

The fourth proportional to 2,939.45, 4,408.96 and 1,379.81 is: 2,069.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.45 : 4,408.96 = 1,379.81 : x
  2. Step 2: Convert to fraction form
    2,939.45/4,408.96 = 1,379.81/x
  3. Step 3: Cross multiply
    2,939.45x = 4,408.96 × 1,379.81
  4. Step 4: Simplify right side
    2,939.45x = 6,083,512.63
  5. Step 5: Solve for x
    x = 6,083,512.63/2,939.45
  6. Step 6: Final answer
    x = 2,069.61

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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.