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Finding the Fourth Proportional to 2,689.00, 4,028.94 and 1,646.82

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Solution

The fourth proportional to 2,689.00, 4,028.94 and 1,646.82 is: 2,467.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.00 : 4,028.94 = 1,646.82 : x
  2. Step 2: Convert to fraction form
    2,689.00/4,028.94 = 1,646.82/x
  3. Step 3: Cross multiply
    2,689.00x = 4,028.94 × 1,646.82
  4. Step 4: Simplify right side
    2,689.00x = 6,634,938.97
  5. Step 5: Solve for x
    x = 6,634,938.97/2,689.00
  6. Step 6: Final answer
    x = 2,467.44

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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.