Home / 3,910.45-5,396.19-2,141.74

Finding the Fourth Proportional to 3,910.45, 5,396.19 and 2,141.74

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Solution

The fourth proportional to 3,910.45, 5,396.19 and 2,141.74 is: 2,955.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.45 : 5,396.19 = 2,141.74 : x
  2. Step 2: Convert to fraction form
    3,910.45/5,396.19 = 2,141.74/x
  3. Step 3: Cross multiply
    3,910.45x = 5,396.19 × 2,141.74
  4. Step 4: Simplify right side
    3,910.45x = 11,557,235.97
  5. Step 5: Solve for x
    x = 11,557,235.97/3,910.45
  6. Step 6: Final answer
    x = 2,955.47

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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.