Home / 3,906.34-5,390.88-2,137.96

Finding the Fourth Proportional to 3,906.34, 5,390.88 and 2,137.96

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Solution

The fourth proportional to 3,906.34, 5,390.88 and 2,137.96 is: 2,950.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.34 : 5,390.88 = 2,137.96 : x
  2. Step 2: Convert to fraction form
    3,906.34/5,390.88 = 2,137.96/x
  3. Step 3: Cross multiply
    3,906.34x = 5,390.88 × 2,137.96
  4. Step 4: Simplify right side
    3,906.34x = 11,525,485.80
  5. Step 5: Solve for x
    x = 11,525,485.80/3,906.34
  6. Step 6: Final answer
    x = 2,950.46

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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.