Home / 2,691.36-4,037.76-1,305.72

Finding the Fourth Proportional to 2,691.36, 4,037.76 and 1,305.72

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Solution

The fourth proportional to 2,691.36, 4,037.76 and 1,305.72 is: 1,958.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.36 : 4,037.76 = 1,305.72 : x
  2. Step 2: Convert to fraction form
    2,691.36/4,037.76 = 1,305.72/x
  3. Step 3: Cross multiply
    2,691.36x = 4,037.76 × 1,305.72
  4. Step 4: Simplify right side
    2,691.36x = 5,272,183.99
  5. Step 5: Solve for x
    x = 5,272,183.99/2,691.36
  6. Step 6: Final answer
    x = 1,958.93

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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.