Home / 2,654.56-3,979.44-1,115.68

Finding the Fourth Proportional to 2,654.56, 3,979.44 and 1,115.68

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Solution

The fourth proportional to 2,654.56, 3,979.44 and 1,115.68 is: 1,672.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,654.56 : 3,979.44 = 1,115.68 : x
  2. Step 2: Convert to fraction form
    2,654.56/3,979.44 = 1,115.68/x
  3. Step 3: Cross multiply
    2,654.56x = 3,979.44 × 1,115.68
  4. Step 4: Simplify right side
    2,654.56x = 4,439,781.62
  5. Step 5: Solve for x
    x = 4,439,781.62/2,654.56
  6. Step 6: Final answer
    x = 1,672.51

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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.