Home / 1,745.97-2,613.66-1,128.43

Finding the Fourth Proportional to 1,745.97, 2,613.66 and 1,128.43

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Solution

The fourth proportional to 1,745.97, 2,613.66 and 1,128.43 is: 1,689.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.97 : 2,613.66 = 1,128.43 : x
  2. Step 2: Convert to fraction form
    1,745.97/2,613.66 = 1,128.43/x
  3. Step 3: Cross multiply
    1,745.97x = 2,613.66 × 1,128.43
  4. Step 4: Simplify right side
    1,745.97x = 2,949,332.35
  5. Step 5: Solve for x
    x = 2,949,332.35/1,745.97
  6. Step 6: Final answer
    x = 1,689.22

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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.