Home / 3,190.11-4,403.85-2,129.64

Finding the Fourth Proportional to 3,190.11, 4,403.85 and 2,129.64

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Solution

The fourth proportional to 3,190.11, 4,403.85 and 2,129.64 is: 2,939.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.11 : 4,403.85 = 2,129.64 : x
  2. Step 2: Convert to fraction form
    3,190.11/4,403.85 = 2,129.64/x
  3. Step 3: Cross multiply
    3,190.11x = 4,403.85 × 2,129.64
  4. Step 4: Simplify right side
    3,190.11x = 9,378,615.11
  5. Step 5: Solve for x
    x = 9,378,615.11/3,190.11
  6. Step 6: Final answer
    x = 2,939.90

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.