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Finding the Fourth Proportional to 2,755.11, 3,802.05 and 1,576.20

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Solution

The fourth proportional to 2,755.11, 3,802.05 and 1,576.20 is: 2,175.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,755.11 : 3,802.05 = 1,576.20 : x
  2. Step 2: Convert to fraction form
    2,755.11/3,802.05 = 1,576.20/x
  3. Step 3: Cross multiply
    2,755.11x = 3,802.05 × 1,576.20
  4. Step 4: Simplify right side
    2,755.11x = 5,992,791.21
  5. Step 5: Solve for x
    x = 5,992,791.21/2,755.11
  6. Step 6: Final answer
    x = 2,175.15

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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.