Home / 3,910.32-5,396.21-2,141.92

Finding the Fourth Proportional to 3,910.32, 5,396.21 and 2,141.92

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Solution

The fourth proportional to 3,910.32, 5,396.21 and 2,141.92 is: 2,955.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.32 : 5,396.21 = 2,141.92 : x
  2. Step 2: Convert to fraction form
    3,910.32/5,396.21 = 2,141.92/x
  3. Step 3: Cross multiply
    3,910.32x = 5,396.21 × 2,141.92
  4. Step 4: Simplify right side
    3,910.32x = 11,558,250.12
  5. Step 5: Solve for x
    x = 11,558,250.12/3,910.32
  6. Step 6: Final answer
    x = 2,955.83

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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.