Home / 3,914.06-5,401.33-2,121.49

Finding the Fourth Proportional to 3,914.06, 5,401.33 and 2,121.49

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Solution

The fourth proportional to 3,914.06, 5,401.33 and 2,121.49 is: 2,927.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.06 : 5,401.33 = 2,121.49 : x
  2. Step 2: Convert to fraction form
    3,914.06/5,401.33 = 2,121.49/x
  3. Step 3: Cross multiply
    3,914.06x = 5,401.33 × 2,121.49
  4. Step 4: Simplify right side
    3,914.06x = 11,458,867.58
  5. Step 5: Solve for x
    x = 11,458,867.58/3,914.06
  6. Step 6: Final answer
    x = 2,927.62

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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.