Home / 3,189.13-4,781.39-2,146.55

Finding the Fourth Proportional to 3,189.13, 4,781.39 and 2,146.55

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Solution

The fourth proportional to 3,189.13, 4,781.39 and 2,146.55 is: 3,218.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.13 : 4,781.39 = 2,146.55 : x
  2. Step 2: Convert to fraction form
    3,189.13/4,781.39 = 2,146.55/x
  3. Step 3: Cross multiply
    3,189.13x = 4,781.39 × 2,146.55
  4. Step 4: Simplify right side
    3,189.13x = 10,263,458.06
  5. Step 5: Solve for x
    x = 10,263,458.06/3,189.13
  6. Step 6: Final answer
    x = 3,218.27

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1.5x scale

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.