Home / 3,840.15-5,299.83-2,161.96

Finding the Fourth Proportional to 3,840.15, 5,299.83 and 2,161.96

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Solution

The fourth proportional to 3,840.15, 5,299.83 and 2,161.96 is: 2,983.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.15 : 5,299.83 = 2,161.96 : x
  2. Step 2: Convert to fraction form
    3,840.15/5,299.83 = 2,161.96/x
  3. Step 3: Cross multiply
    3,840.15x = 5,299.83 × 2,161.96
  4. Step 4: Simplify right side
    3,840.15x = 11,458,020.47
  5. Step 5: Solve for x
    x = 11,458,020.47/3,840.15
  6. Step 6: Final answer
    x = 2,983.74

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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.