Home / 3,680.82-5,080.62-2,189.64

Finding the Fourth Proportional to 3,680.82, 5,080.62 and 2,189.64

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Solution

The fourth proportional to 3,680.82, 5,080.62 and 2,189.64 is: 3,022.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.82 : 5,080.62 = 2,189.64 : x
  2. Step 2: Convert to fraction form
    3,680.82/5,080.62 = 2,189.64/x
  3. Step 3: Cross multiply
    3,680.82x = 5,080.62 × 2,189.64
  4. Step 4: Simplify right side
    3,680.82x = 11,124,756.04
  5. Step 5: Solve for x
    x = 11,124,756.04/3,680.82
  6. Step 6: Final answer
    x = 3,022.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.