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Finding the Fourth Proportional to 2,028.11, 3,042.00 and 641.48

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Solution

The fourth proportional to 2,028.11, 3,042.00 and 641.48 is: 962.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.11 : 3,042.00 = 641.48 : x
  2. Step 2: Convert to fraction form
    2,028.11/3,042.00 = 641.48/x
  3. Step 3: Cross multiply
    2,028.11x = 3,042.00 × 641.48
  4. Step 4: Simplify right side
    2,028.11x = 1,951,378.95
  5. Step 5: Solve for x
    x = 1,951,378.95/2,028.11
  6. Step 6: Final answer
    x = 962.17

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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.