Home / 3,950.28-5,451.40-2,181.90

Finding the Fourth Proportional to 3,950.28, 5,451.40 and 2,181.90

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Solution

The fourth proportional to 3,950.28, 5,451.40 and 2,181.90 is: 3,011.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,950.28 : 5,451.40 = 2,181.90 : x
  2. Step 2: Convert to fraction form
    3,950.28/5,451.40 = 2,181.90/x
  3. Step 3: Cross multiply
    3,950.28x = 5,451.40 × 2,181.90
  4. Step 4: Simplify right side
    3,950.28x = 11,894,409.66
  5. Step 5: Solve for x
    x = 11,894,409.66/3,950.28
  6. Step 6: Final answer
    x = 3,011.03

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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.