Home / 3,971.72-5,961.18-3,317.65

Finding the Fourth Proportional to 3,971.72, 5,961.18 and 3,317.65

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Solution

The fourth proportional to 3,971.72, 5,961.18 and 3,317.65 is: 4,979.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.72 : 5,961.18 = 3,317.65 : x
  2. Step 2: Convert to fraction form
    3,971.72/5,961.18 = 3,317.65/x
  3. Step 3: Cross multiply
    3,971.72x = 5,961.18 × 3,317.65
  4. Step 4: Simplify right side
    3,971.72x = 19,777,108.83
  5. Step 5: Solve for x
    x = 19,777,108.83/3,971.72
  6. Step 6: Final answer
    x = 4,979.48

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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.