Home / 3,676.15-5,512.20-1,209.70

Finding the Fourth Proportional to 3,676.15, 5,512.20 and 1,209.70

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Solution

The fourth proportional to 3,676.15, 5,512.20 and 1,209.70 is: 1,813.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,676.15 : 5,512.20 = 1,209.70 : x
  2. Step 2: Convert to fraction form
    3,676.15/5,512.20 = 1,209.70/x
  3. Step 3: Cross multiply
    3,676.15x = 5,512.20 × 1,209.70
  4. Step 4: Simplify right side
    3,676.15x = 6,668,108.34
  5. Step 5: Solve for x
    x = 6,668,108.34/3,676.15
  6. Step 6: Final answer
    x = 1,813.88

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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.