Home / 3,189.14-4,400.92-1,772.79

Finding the Fourth Proportional to 3,189.14, 4,400.92 and 1,772.79

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Solution

The fourth proportional to 3,189.14, 4,400.92 and 1,772.79 is: 2,446.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.14 : 4,400.92 = 1,772.79 : x
  2. Step 2: Convert to fraction form
    3,189.14/4,400.92 = 1,772.79/x
  3. Step 3: Cross multiply
    3,189.14x = 4,400.92 × 1,772.79
  4. Step 4: Simplify right side
    3,189.14x = 7,801,882.71
  5. Step 5: Solve for x
    x = 7,801,882.71/3,189.14
  6. Step 6: Final answer
    x = 2,446.39

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Half scale
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Double scale
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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.