Home / 2,311.44-3,190-1,379.92

Finding the Fourth Proportional to 2,311.44, 3,190 and 1,379.92

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Solution

The fourth proportional to 2,311.44, 3,190 and 1,379.92 is: 1,904.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.44 : 3,190 = 1,379.92 : x
  2. Step 2: Convert to fraction form
    2,311.44/3,190 = 1,379.92/x
  3. Step 3: Cross multiply
    2,311.44x = 3,190 × 1,379.92
  4. Step 4: Simplify right side
    2,311.44x = 4,401,944.80
  5. Step 5: Solve for x
    x = 4,401,944.80/2,311.44
  6. Step 6: Final answer
    x = 1,904.42

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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.