Home / 5,619.72-7,756.26-3,231.09

Finding the Fourth Proportional to 5,619.72, 7,756.26 and 3,231.09

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Solution

The fourth proportional to 5,619.72, 7,756.26 and 3,231.09 is: 4,459.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.72 : 7,756.26 = 3,231.09 : x
  2. Step 2: Convert to fraction form
    5,619.72/7,756.26 = 3,231.09/x
  3. Step 3: Cross multiply
    5,619.72x = 7,756.26 × 3,231.09
  4. Step 4: Simplify right side
    5,619.72x = 25,061,174.12
  5. Step 5: Solve for x
    x = 25,061,174.12/5,619.72
  6. Step 6: Final answer
    x = 4,459.51

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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.