Home / 3,639.78-5,460.48-2,080.44

Finding the Fourth Proportional to 3,639.78, 5,460.48 and 2,080.44

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Solution

The fourth proportional to 3,639.78, 5,460.48 and 2,080.44 is: 3,121.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.78 : 5,460.48 = 2,080.44 : x
  2. Step 2: Convert to fraction form
    3,639.78/5,460.48 = 2,080.44/x
  3. Step 3: Cross multiply
    3,639.78x = 5,460.48 × 2,080.44
  4. Step 4: Simplify right side
    3,639.78x = 11,360,201.01
  5. Step 5: Solve for x
    x = 11,360,201.01/3,639.78
  6. Step 6: Final answer
    x = 3,121.12

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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.