Home / 6,121.81-9,183.27-1,905.12

Finding the Fourth Proportional to 6,121.81, 9,183.27 and 1,905.12

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Solution

The fourth proportional to 6,121.81, 9,183.27 and 1,905.12 is: 2,857.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.81 : 9,183.27 = 1,905.12 : x
  2. Step 2: Convert to fraction form
    6,121.81/9,183.27 = 1,905.12/x
  3. Step 3: Cross multiply
    6,121.81x = 9,183.27 × 1,905.12
  4. Step 4: Simplify right side
    6,121.81x = 17,495,238.49
  5. Step 5: Solve for x
    x = 17,495,238.49/6,121.81
  6. Step 6: Final answer
    x = 2,857.85

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Half scale
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Double scale
Find fourth proportional to 6,122.81, 9,184.77 and 1,906.12
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.