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Finding the Fourth Proportional to 1,673.97, 2,509.11 and 1,261.79

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Solution

The fourth proportional to 1,673.97, 2,509.11 and 1,261.79 is: 1,891.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673.97 : 2,509.11 = 1,261.79 : x
  2. Step 2: Convert to fraction form
    1,673.97/2,509.11 = 1,261.79/x
  3. Step 3: Cross multiply
    1,673.97x = 2,509.11 × 1,261.79
  4. Step 4: Simplify right side
    1,673.97x = 3,165,957.36
  5. Step 5: Solve for x
    x = 3,165,957.36/1,673.97
  6. Step 6: Final answer
    x = 1,891.29

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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.