Home / 1,689.29-2,531.92-1,104.58

Finding the Fourth Proportional to 1,689.29, 2,531.92 and 1,104.58

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Solution

The fourth proportional to 1,689.29, 2,531.92 and 1,104.58 is: 1,655.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.29 : 2,531.92 = 1,104.58 : x
  2. Step 2: Convert to fraction form
    1,689.29/2,531.92 = 1,104.58/x
  3. Step 3: Cross multiply
    1,689.29x = 2,531.92 × 1,104.58
  4. Step 4: Simplify right side
    1,689.29x = 2,796,690.01
  5. Step 5: Solve for x
    x = 2,796,690.01/1,689.29
  6. Step 6: Final answer
    x = 1,655.54

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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.