Home / 3,723.21-5,138.07-2,151.33

Finding the Fourth Proportional to 3,723.21, 5,138.07 and 2,151.33

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Solution

The fourth proportional to 3,723.21, 5,138.07 and 2,151.33 is: 2,968.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,723.21 : 5,138.07 = 2,151.33 : x
  2. Step 2: Convert to fraction form
    3,723.21/5,138.07 = 2,151.33/x
  3. Step 3: Cross multiply
    3,723.21x = 5,138.07 × 2,151.33
  4. Step 4: Simplify right side
    3,723.21x = 11,053,684.13
  5. Step 5: Solve for x
    x = 11,053,684.13/3,723.21
  6. Step 6: Final answer
    x = 2,968.86

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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.