Home / 3,398.43-4,691.60-2,640.51

Finding the Fourth Proportional to 3,398.43, 4,691.60 and 2,640.51

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Solution

The fourth proportional to 3,398.43, 4,691.60 and 2,640.51 is: 3,645.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.43 : 4,691.60 = 2,640.51 : x
  2. Step 2: Convert to fraction form
    3,398.43/4,691.60 = 2,640.51/x
  3. Step 3: Cross multiply
    3,398.43x = 4,691.60 × 2,640.51
  4. Step 4: Simplify right side
    3,398.43x = 12,388,203.51
  5. Step 5: Solve for x
    x = 12,388,203.51/3,398.43
  6. Step 6: Final answer
    x = 3,645.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.