Home / 2,778.72-4,161.33-1,801.86

Finding the Fourth Proportional to 2,778.72, 4,161.33 and 1,801.86

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Solution

The fourth proportional to 2,778.72, 4,161.33 and 1,801.86 is: 2,698.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.72 : 4,161.33 = 1,801.86 : x
  2. Step 2: Convert to fraction form
    2,778.72/4,161.33 = 1,801.86/x
  3. Step 3: Cross multiply
    2,778.72x = 4,161.33 × 1,801.86
  4. Step 4: Simplify right side
    2,778.72x = 7,498,134.07
  5. Step 5: Solve for x
    x = 7,498,134.07/2,778.72
  6. Step 6: Final answer
    x = 2,698.41

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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.