Home / 3,109.43-4,291.05-1,850.55

Finding the Fourth Proportional to 3,109.43, 4,291.05 and 1,850.55

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Solution

The fourth proportional to 3,109.43, 4,291.05 and 1,850.55 is: 2,553.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.43 : 4,291.05 = 1,850.55 : x
  2. Step 2: Convert to fraction form
    3,109.43/4,291.05 = 1,850.55/x
  3. Step 3: Cross multiply
    3,109.43x = 4,291.05 × 1,850.55
  4. Step 4: Simplify right side
    3,109.43x = 7,940,802.58
  5. Step 5: Solve for x
    x = 7,940,802.58/3,109.43
  6. Step 6: Final answer
    x = 2,553.78

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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.