Home / 2,691.22-3,715.96-2,169.58

Finding the Fourth Proportional to 2,691.22, 3,715.96 and 2,169.58

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Solution

The fourth proportional to 2,691.22, 3,715.96 and 2,169.58 is: 2,995.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.22 : 3,715.96 = 2,169.58 : x
  2. Step 2: Convert to fraction form
    2,691.22/3,715.96 = 2,169.58/x
  3. Step 3: Cross multiply
    2,691.22x = 3,715.96 × 2,169.58
  4. Step 4: Simplify right side
    2,691.22x = 8,062,057.78
  5. Step 5: Solve for x
    x = 8,062,057.78/2,691.22
  6. Step 6: Final answer
    x = 2,995.69

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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.