Home / 3,189.62-4,403.16-2,129.17

Finding the Fourth Proportional to 3,189.62, 4,403.16 and 2,129.17

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Solution

The fourth proportional to 3,189.62, 4,403.16 and 2,129.17 is: 2,939.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.62 : 4,403.16 = 2,129.17 : x
  2. Step 2: Convert to fraction form
    3,189.62/4,403.16 = 2,129.17/x
  3. Step 3: Cross multiply
    3,189.62x = 4,403.16 × 2,129.17
  4. Step 4: Simplify right side
    3,189.62x = 9,375,076.18
  5. Step 5: Solve for x
    x = 9,375,076.18/3,189.62
  6. Step 6: Final answer
    x = 2,939.25

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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.