Home / 2,961.11-4,081.19-2,163.13

Finding the Fourth Proportional to 2,961.11, 4,081.19 and 2,163.13

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Solution

The fourth proportional to 2,961.11, 4,081.19 and 2,163.13 is: 2,981.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.11 : 4,081.19 = 2,163.13 : x
  2. Step 2: Convert to fraction form
    2,961.11/4,081.19 = 2,163.13/x
  3. Step 3: Cross multiply
    2,961.11x = 4,081.19 × 2,163.13
  4. Step 4: Simplify right side
    2,961.11x = 8,828,144.52
  5. Step 5: Solve for x
    x = 8,828,144.52/2,961.11
  6. Step 6: Final answer
    x = 2,981.36

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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.