Home / 2,205.82-3,043.98-1,211.19

Finding the Fourth Proportional to 2,205.82, 3,043.98 and 1,211.19

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Solution

The fourth proportional to 2,205.82, 3,043.98 and 1,211.19 is: 1,671.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.82 : 3,043.98 = 1,211.19 : x
  2. Step 2: Convert to fraction form
    2,205.82/3,043.98 = 1,211.19/x
  3. Step 3: Cross multiply
    2,205.82x = 3,043.98 × 1,211.19
  4. Step 4: Simplify right side
    2,205.82x = 3,686,838.14
  5. Step 5: Solve for x
    x = 3,686,838.14/2,205.82
  6. Step 6: Final answer
    x = 1,671.41

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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.