Home / 3,910.88-5,396.97-2,118.33

Finding the Fourth Proportional to 3,910.88, 5,396.97 and 2,118.33

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Solution

The fourth proportional to 3,910.88, 5,396.97 and 2,118.33 is: 2,923.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.88 : 5,396.97 = 2,118.33 : x
  2. Step 2: Convert to fraction form
    3,910.88/5,396.97 = 2,118.33/x
  3. Step 3: Cross multiply
    3,910.88x = 5,396.97 × 2,118.33
  4. Step 4: Simplify right side
    3,910.88x = 11,432,563.46
  5. Step 5: Solve for x
    x = 11,432,563.46/3,910.88
  6. Step 6: Final answer
    x = 2,923.28

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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.