Home / 2,921.69-4,003.13-2,882.73

Finding the Fourth Proportional to 2,921.69, 4,003.13 and 2,882.73

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Solution

The fourth proportional to 2,921.69, 4,003.13 and 2,882.73 is: 3,949.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.69 : 4,003.13 = 2,882.73 : x
  2. Step 2: Convert to fraction form
    2,921.69/4,003.13 = 2,882.73/x
  3. Step 3: Cross multiply
    2,921.69x = 4,003.13 × 2,882.73
  4. Step 4: Simplify right side
    2,921.69x = 11,539,942.94
  5. Step 5: Solve for x
    x = 11,539,942.94/2,921.69
  6. Step 6: Final answer
    x = 3,949.75

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Half scale
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Double scale
Find fourth proportional to 2,922.69, 4,004.50 and 2,883.73
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.