Home / 5,128.54-7,676.38-2,659.96

Finding the Fourth Proportional to 5,128.54, 7,676.38 and 2,659.96

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Solution

The fourth proportional to 5,128.54, 7,676.38 and 2,659.96 is: 3,981.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.54 : 7,676.38 = 2,659.96 : x
  2. Step 2: Convert to fraction form
    5,128.54/7,676.38 = 2,659.96/x
  3. Step 3: Cross multiply
    5,128.54x = 7,676.38 × 2,659.96
  4. Step 4: Simplify right side
    5,128.54x = 20,418,863.74
  5. Step 5: Solve for x
    x = 20,418,863.74/5,128.54
  6. Step 6: Final answer
    x = 3,981.42

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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.