Home / 3,682.78-5,080.52-2,189.86

Finding the Fourth Proportional to 3,682.78, 5,080.52 and 2,189.86

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Solution

The fourth proportional to 3,682.78, 5,080.52 and 2,189.86 is: 3,020.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,682.78 : 5,080.52 = 2,189.86 : x
  2. Step 2: Convert to fraction form
    3,682.78/5,080.52 = 2,189.86/x
  3. Step 3: Cross multiply
    3,682.78x = 5,080.52 × 2,189.86
  4. Step 4: Simplify right side
    3,682.78x = 11,125,627.53
  5. Step 5: Solve for x
    x = 11,125,627.53/3,682.78
  6. Step 6: Final answer
    x = 3,020.99

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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.