Home / 3,914.65-5,401.94-2,321.21

Finding the Fourth Proportional to 3,914.65, 5,401.94 and 2,321.21

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Solution

The fourth proportional to 3,914.65, 5,401.94 and 2,321.21 is: 3,203.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.65 : 5,401.94 = 2,321.21 : x
  2. Step 2: Convert to fraction form
    3,914.65/5,401.94 = 2,321.21/x
  3. Step 3: Cross multiply
    3,914.65x = 5,401.94 × 2,321.21
  4. Step 4: Simplify right side
    3,914.65x = 12,539,039.05
  5. Step 5: Solve for x
    x = 12,539,039.05/3,914.65
  6. Step 6: Final answer
    x = 3,203.11

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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.