Home / 3,854.38-5,781.66-1,257.34

Finding the Fourth Proportional to 3,854.38, 5,781.66 and 1,257.34

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Solution

The fourth proportional to 3,854.38, 5,781.66 and 1,257.34 is: 1,886.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,854.38 : 5,781.66 = 1,257.34 : x
  2. Step 2: Convert to fraction form
    3,854.38/5,781.66 = 1,257.34/x
  3. Step 3: Cross multiply
    3,854.38x = 5,781.66 × 1,257.34
  4. Step 4: Simplify right side
    3,854.38x = 7,269,512.38
  5. Step 5: Solve for x
    x = 7,269,512.38/3,854.38
  6. Step 6: Final answer
    x = 1,886.04

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1.5x scale

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.