Home / 3,789.66-5,229.96-2,111.40

Finding the Fourth Proportional to 3,789.66, 5,229.96 and 2,111.40

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Solution

The fourth proportional to 3,789.66, 5,229.96 and 2,111.40 is: 2,913.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.66 : 5,229.96 = 2,111.40 : x
  2. Step 2: Convert to fraction form
    3,789.66/5,229.96 = 2,111.40/x
  3. Step 3: Cross multiply
    3,789.66x = 5,229.96 × 2,111.40
  4. Step 4: Simplify right side
    3,789.66x = 11,042,537.54
  5. Step 5: Solve for x
    x = 11,042,537.54/3,789.66
  6. Step 6: Final answer
    x = 2,913.86

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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.