Home / 3,676.72-5,515.42-1,211.54

Finding the Fourth Proportional to 3,676.72, 5,515.42 and 1,211.54

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Solution

The fourth proportional to 3,676.72, 5,515.42 and 1,211.54 is: 1,817.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,676.72 : 5,515.42 = 1,211.54 : x
  2. Step 2: Convert to fraction form
    3,676.72/5,515.42 = 1,211.54/x
  3. Step 3: Cross multiply
    3,676.72x = 5,515.42 × 1,211.54
  4. Step 4: Simplify right side
    3,676.72x = 6,682,151.95
  5. Step 5: Solve for x
    x = 6,682,151.95/3,676.72
  6. Step 6: Final answer
    x = 1,817.42

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1.5x scale

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.