Home / 2,189.16-3,278.97-1,776.39

Finding the Fourth Proportional to 2,189.16, 3,278.97 and 1,776.39

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Solution

The fourth proportional to 2,189.16, 3,278.97 and 1,776.39 is: 2,660.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.16 : 3,278.97 = 1,776.39 : x
  2. Step 2: Convert to fraction form
    2,189.16/3,278.97 = 1,776.39/x
  3. Step 3: Cross multiply
    2,189.16x = 3,278.97 × 1,776.39
  4. Step 4: Simplify right side
    2,189.16x = 5,824,729.52
  5. Step 5: Solve for x
    x = 5,824,729.52/2,189.16
  6. Step 6: Final answer
    x = 2,660.71

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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.