Home / 2,689.39-4,035.63-1,129.25

Finding the Fourth Proportional to 2,689.39, 4,035.63 and 1,129.25

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Solution

The fourth proportional to 2,689.39, 4,035.63 and 1,129.25 is: 1,694.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.39 : 4,035.63 = 1,129.25 : x
  2. Step 2: Convert to fraction form
    2,689.39/4,035.63 = 1,129.25/x
  3. Step 3: Cross multiply
    2,689.39x = 4,035.63 × 1,129.25
  4. Step 4: Simplify right side
    2,689.39x = 4,557,235.18
  5. Step 5: Solve for x
    x = 4,557,235.18/2,689.39
  6. Step 6: Final answer
    x = 1,694.52

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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.