Home / 3,440.21-5,150.21-3,111.90

Finding the Fourth Proportional to 3,440.21, 5,150.21 and 3,111.90

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Solution

The fourth proportional to 3,440.21, 5,150.21 and 3,111.90 is: 4,658.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,440.21 : 5,150.21 = 3,111.90 : x
  2. Step 2: Convert to fraction form
    3,440.21/5,150.21 = 3,111.90/x
  3. Step 3: Cross multiply
    3,440.21x = 5,150.21 × 3,111.90
  4. Step 4: Simplify right side
    3,440.21x = 16,026,922.94
  5. Step 5: Solve for x
    x = 16,026,922.94/3,440.21
  6. Step 6: Final answer
    x = 4,658.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.