Home / 3,906.12-5,390.53-2,137.77

Finding the Fourth Proportional to 3,906.12, 5,390.53 and 2,137.77

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Solution

The fourth proportional to 3,906.12, 5,390.53 and 2,137.77 is: 2,950.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.12 : 5,390.53 = 2,137.77 : x
  2. Step 2: Convert to fraction form
    3,906.12/5,390.53 = 2,137.77/x
  3. Step 3: Cross multiply
    3,906.12x = 5,390.53 × 2,137.77
  4. Step 4: Simplify right side
    3,906.12x = 11,523,713.32
  5. Step 5: Solve for x
    x = 11,523,713.32/3,906.12
  6. Step 6: Final answer
    x = 2,950.17

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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.