Home / 3,086.11-4,259.07-1,891.09

Finding the Fourth Proportional to 3,086.11, 4,259.07 and 1,891.09

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Solution

The fourth proportional to 3,086.11, 4,259.07 and 1,891.09 is: 2,609.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.11 : 4,259.07 = 1,891.09 : x
  2. Step 2: Convert to fraction form
    3,086.11/4,259.07 = 1,891.09/x
  3. Step 3: Cross multiply
    3,086.11x = 4,259.07 × 1,891.09
  4. Step 4: Simplify right side
    3,086.11x = 8,054,284.69
  5. Step 5: Solve for x
    x = 8,054,284.69/3,086.11
  6. Step 6: Final answer
    x = 2,609.85

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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.