Home / 2,691.80-4,037.68-936.81

Finding the Fourth Proportional to 2,691.80, 4,037.68 and 936.81

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Solution

The fourth proportional to 2,691.80, 4,037.68 and 936.81 is: 1,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.80 : 4,037.68 = 936.81 : x
  2. Step 2: Convert to fraction form
    2,691.80/4,037.68 = 936.81/x
  3. Step 3: Cross multiply
    2,691.80x = 4,037.68 × 936.81
  4. Step 4: Simplify right side
    2,691.80x = 3,782,527.49
  5. Step 5: Solve for x
    x = 3,782,527.49/2,691.80
  6. Step 6: Final answer
    x = 1,405.20

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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.