Home / 3,440.88-5,161.32-1,905.12

Finding the Fourth Proportional to 3,440.88, 5,161.32 and 1,905.12

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Solution

The fourth proportional to 3,440.88, 5,161.32 and 1,905.12 is: 2,857.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,440.88 : 5,161.32 = 1,905.12 : x
  2. Step 2: Convert to fraction form
    3,440.88/5,161.32 = 1,905.12/x
  3. Step 3: Cross multiply
    3,440.88x = 5,161.32 × 1,905.12
  4. Step 4: Simplify right side
    3,440.88x = 9,832,933.96
  5. Step 5: Solve for x
    x = 9,832,933.96/3,440.88
  6. Step 6: Final answer
    x = 2,857.68

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Half scale
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Double scale
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Similar ratio
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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.