Home / 3,914.30-5,401.69-2,145.90

Finding the Fourth Proportional to 3,914.30, 5,401.69 and 2,145.90

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Solution

The fourth proportional to 3,914.30, 5,401.69 and 2,145.90 is: 2,961.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.30 : 5,401.69 = 2,145.90 : x
  2. Step 2: Convert to fraction form
    3,914.30/5,401.69 = 2,145.90/x
  3. Step 3: Cross multiply
    3,914.30x = 5,401.69 × 2,145.90
  4. Step 4: Simplify right side
    3,914.30x = 11,591,486.57
  5. Step 5: Solve for x
    x = 11,591,486.57/3,914.30
  6. Step 6: Final answer
    x = 2,961.32

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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.