Home / 3,105.09-4,286.00-1,910.45

Finding the Fourth Proportional to 3,105.09, 4,286.00 and 1,910.45

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Solution

The fourth proportional to 3,105.09, 4,286.00 and 1,910.45 is: 2,637.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.09 : 4,286.00 = 1,910.45 : x
  2. Step 2: Convert to fraction form
    3,105.09/4,286.00 = 1,910.45/x
  3. Step 3: Cross multiply
    3,105.09x = 4,286.00 × 1,910.45
  4. Step 4: Simplify right side
    3,105.09x = 8,188,204.19
  5. Step 5: Solve for x
    x = 8,188,204.19/3,105.09
  6. Step 6: Final answer
    x = 2,637.03

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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.