Home / 1,881.14-2,821.26-1,331.72

Finding the Fourth Proportional to 1,881.14, 2,821.26 and 1,331.72

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Solution

The fourth proportional to 1,881.14, 2,821.26 and 1,331.72 is: 1,997.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,881.14 : 2,821.26 = 1,331.72 : x
  2. Step 2: Convert to fraction form
    1,881.14/2,821.26 = 1,331.72/x
  3. Step 3: Cross multiply
    1,881.14x = 2,821.26 × 1,331.72
  4. Step 4: Simplify right side
    1,881.14x = 3,757,128.37
  5. Step 5: Solve for x
    x = 3,757,128.37/1,881.14
  6. Step 6: Final answer
    x = 1,997.26

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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.