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Finding the Fourth Proportional to 2,309.96, 3,187.94 and 1,314.96

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Solution

The fourth proportional to 2,309.96, 3,187.94 and 1,314.96 is: 1,814.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.96 : 3,187.94 = 1,314.96 : x
  2. Step 2: Convert to fraction form
    2,309.96/3,187.94 = 1,314.96/x
  3. Step 3: Cross multiply
    2,309.96x = 3,187.94 × 1,314.96
  4. Step 4: Simplify right side
    2,309.96x = 4,192,007.01
  5. Step 5: Solve for x
    x = 4,192,007.01/2,309.96
  6. Step 6: Final answer
    x = 1,814.76

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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.