Home / 3,639.59-5,455.16-2,080.68

Finding the Fourth Proportional to 3,639.59, 5,455.16 and 2,080.68

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Solution

The fourth proportional to 3,639.59, 5,455.16 and 2,080.68 is: 3,118.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.59 : 5,455.16 = 2,080.68 : x
  2. Step 2: Convert to fraction form
    3,639.59/5,455.16 = 2,080.68/x
  3. Step 3: Cross multiply
    3,639.59x = 5,455.16 × 2,080.68
  4. Step 4: Simplify right side
    3,639.59x = 11,350,431.91
  5. Step 5: Solve for x
    x = 11,350,431.91/3,639.59
  6. Step 6: Final answer
    x = 3,118.61

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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.