Home / 3,105.54-4,286.52-1,910.89

Finding the Fourth Proportional to 3,105.54, 4,286.52 and 1,910.89

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Solution

The fourth proportional to 3,105.54, 4,286.52 and 1,910.89 is: 2,637.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.54 : 4,286.52 = 1,910.89 : x
  2. Step 2: Convert to fraction form
    3,105.54/4,286.52 = 1,910.89/x
  3. Step 3: Cross multiply
    3,105.54x = 4,286.52 × 1,910.89
  4. Step 4: Simplify right side
    3,105.54x = 8,191,073.56
  5. Step 5: Solve for x
    x = 8,191,073.56/3,105.54
  6. Step 6: Final answer
    x = 2,637.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.