Home / 2,481.08-3,720.35-1,311.71

Finding the Fourth Proportional to 2,481.08, 3,720.35 and 1,311.71

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Solution

The fourth proportional to 2,481.08, 3,720.35 and 1,311.71 is: 1,966.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,481.08 : 3,720.35 = 1,311.71 : x
  2. Step 2: Convert to fraction form
    2,481.08/3,720.35 = 1,311.71/x
  3. Step 3: Cross multiply
    2,481.08x = 3,720.35 × 1,311.71
  4. Step 4: Simplify right side
    2,481.08x = 4,879,995.14
  5. Step 5: Solve for x
    x = 4,879,995.14/2,481.08
  6. Step 6: Final answer
    x = 1,966.89

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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.