Home / 3,950.64-5,451.78-2,181.96

Finding the Fourth Proportional to 3,950.64, 5,451.78 and 2,181.96

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Solution

The fourth proportional to 3,950.64, 5,451.78 and 2,181.96 is: 3,011.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,950.64 : 5,451.78 = 2,181.96 : x
  2. Step 2: Convert to fraction form
    3,950.64/5,451.78 = 2,181.96/x
  3. Step 3: Cross multiply
    3,950.64x = 5,451.78 × 2,181.96
  4. Step 4: Simplify right side
    3,950.64x = 11,895,565.89
  5. Step 5: Solve for x
    x = 11,895,565.89/3,950.64
  6. Step 6: Final answer
    x = 3,011.05

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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.