Home / 3,913.92-5,401.30-2,145.64

Finding the Fourth Proportional to 3,913.92, 5,401.30 and 2,145.64

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Solution

The fourth proportional to 3,913.92, 5,401.30 and 2,145.64 is: 2,961.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.92 : 5,401.30 = 2,145.64 : x
  2. Step 2: Convert to fraction form
    3,913.92/5,401.30 = 2,145.64/x
  3. Step 3: Cross multiply
    3,913.92x = 5,401.30 × 2,145.64
  4. Step 4: Simplify right side
    3,913.92x = 11,589,245.33
  5. Step 5: Solve for x
    x = 11,589,245.33/3,913.92
  6. Step 6: Final answer
    x = 2,961.03

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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.