Home / 5,115.44-7,656.66-2,646.86

Finding the Fourth Proportional to 5,115.44, 7,656.66 and 2,646.86

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Solution

The fourth proportional to 5,115.44, 7,656.66 and 2,646.86 is: 3,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.44 : 7,656.66 = 2,646.86 : x
  2. Step 2: Convert to fraction form
    5,115.44/7,656.66 = 2,646.86/x
  3. Step 3: Cross multiply
    5,115.44x = 7,656.66 × 2,646.86
  4. Step 4: Simplify right side
    5,115.44x = 20,266,107.09
  5. Step 5: Solve for x
    x = 20,266,107.09/5,115.44
  6. Step 6: Final answer
    x = 3,961.75

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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.