Home / 3,119.85-4,676.74-2,791.80

Finding the Fourth Proportional to 3,119.85, 4,676.74 and 2,791.80

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Solution

The fourth proportional to 3,119.85, 4,676.74 and 2,791.80 is: 4,184.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.85 : 4,676.74 = 2,791.80 : x
  2. Step 2: Convert to fraction form
    3,119.85/4,676.74 = 2,791.80/x
  3. Step 3: Cross multiply
    3,119.85x = 4,676.74 × 2,791.80
  4. Step 4: Simplify right side
    3,119.85x = 13,056,515.75
  5. Step 5: Solve for x
    x = 13,056,515.75/3,119.85
  6. Step 6: Final answer
    x = 4,184.98

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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.