Home / 2,231.62-3,079.81-1,236.98

Finding the Fourth Proportional to 2,231.62, 3,079.81 and 1,236.98

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Solution

The fourth proportional to 2,231.62, 3,079.81 and 1,236.98 is: 1,707.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.62 : 3,079.81 = 1,236.98 : x
  2. Step 2: Convert to fraction form
    2,231.62/3,079.81 = 1,236.98/x
  3. Step 3: Cross multiply
    2,231.62x = 3,079.81 × 1,236.98
  4. Step 4: Simplify right side
    2,231.62x = 3,809,672.62
  5. Step 5: Solve for x
    x = 3,809,672.62/2,231.62
  6. Step 6: Final answer
    x = 1,707.14

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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.