Home / 3,677.78-5,517.35-1,212.70

Finding the Fourth Proportional to 3,677.78, 5,517.35 and 1,212.70

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Solution

The fourth proportional to 3,677.78, 5,517.35 and 1,212.70 is: 1,819.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,677.78 : 5,517.35 = 1,212.70 : x
  2. Step 2: Convert to fraction form
    3,677.78/5,517.35 = 1,212.70/x
  3. Step 3: Cross multiply
    3,677.78x = 5,517.35 × 1,212.70
  4. Step 4: Simplify right side
    3,677.78x = 6,690,890.35
  5. Step 5: Solve for x
    x = 6,690,890.35/3,677.78
  6. Step 6: Final answer
    x = 1,819.27

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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.