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Finding the Fourth Proportional to 2,028, 3,028.20 and 1,661.88

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Solution

The fourth proportional to 2,028, 3,028.20 and 1,661.88 is: 2,481.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028 : 3,028.20 = 1,661.88 : x
  2. Step 2: Convert to fraction form
    2,028/3,028.20 = 1,661.88/x
  3. Step 3: Cross multiply
    2,028x = 3,028.20 × 1,661.88
  4. Step 4: Simplify right side
    2,028x = 5,032,505.02
  5. Step 5: Solve for x
    x = 5,032,505.02/2,028
  6. Step 6: Final answer
    x = 2,481.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.