Home / 3,950.19-5,451.27-2,181.78

Finding the Fourth Proportional to 3,950.19, 5,451.27 and 2,181.78

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Solution

The fourth proportional to 3,950.19, 5,451.27 and 2,181.78 is: 3,010.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,950.19 : 5,451.27 = 2,181.78 : x
  2. Step 2: Convert to fraction form
    3,950.19/5,451.27 = 2,181.78/x
  3. Step 3: Cross multiply
    3,950.19x = 5,451.27 × 2,181.78
  4. Step 4: Simplify right side
    3,950.19x = 11,893,471.86
  5. Step 5: Solve for x
    x = 11,893,471.86/3,950.19
  6. Step 6: Final answer
    x = 3,010.86

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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.