Home / 2,311.32-3,188.87-1,367.14

Finding the Fourth Proportional to 2,311.32, 3,188.87 and 1,367.14

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Solution

The fourth proportional to 2,311.32, 3,188.87 and 1,367.14 is: 1,886.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.32 : 3,188.87 = 1,367.14 : x
  2. Step 2: Convert to fraction form
    2,311.32/3,188.87 = 1,367.14/x
  3. Step 3: Cross multiply
    2,311.32x = 3,188.87 × 1,367.14
  4. Step 4: Simplify right side
    2,311.32x = 4,359,631.73
  5. Step 5: Solve for x
    x = 4,359,631.73/2,311.32
  6. Step 6: Final answer
    x = 1,886.21

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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.