Home / 3,105.84-4,286.49-1,927.29

Finding the Fourth Proportional to 3,105.84, 4,286.49 and 1,927.29

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Solution

The fourth proportional to 3,105.84, 4,286.49 and 1,927.29 is: 2,659.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.84 : 4,286.49 = 1,927.29 : x
  2. Step 2: Convert to fraction form
    3,105.84/4,286.49 = 1,927.29/x
  3. Step 3: Cross multiply
    3,105.84x = 4,286.49 × 1,927.29
  4. Step 4: Simplify right side
    3,105.84x = 8,261,309.31
  5. Step 5: Solve for x
    x = 8,261,309.31/3,105.84
  6. Step 6: Final answer
    x = 2,659.93

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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.