Home / 3,189.05-4,400.79-1,863.17

Finding the Fourth Proportional to 3,189.05, 4,400.79 and 1,863.17

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Solution

The fourth proportional to 3,189.05, 4,400.79 and 1,863.17 is: 2,571.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.05 : 4,400.79 = 1,863.17 : x
  2. Step 2: Convert to fraction form
    3,189.05/4,400.79 = 1,863.17/x
  3. Step 3: Cross multiply
    3,189.05x = 4,400.79 × 1,863.17
  4. Step 4: Simplify right side
    3,189.05x = 8,199,419.90
  5. Step 5: Solve for x
    x = 8,199,419.90/3,189.05
  6. Step 6: Final answer
    x = 2,571.12

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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.