Home / 5,171.30-7,139.32-3,580.26

Finding the Fourth Proportional to 5,171.30, 7,139.32 and 3,580.26

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Solution

The fourth proportional to 5,171.30, 7,139.32 and 3,580.26 is: 4,942.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.30 : 7,139.32 = 3,580.26 : x
  2. Step 2: Convert to fraction form
    5,171.30/7,139.32 = 3,580.26/x
  3. Step 3: Cross multiply
    5,171.30x = 7,139.32 × 3,580.26
  4. Step 4: Simplify right side
    5,171.30x = 25,560,621.82
  5. Step 5: Solve for x
    x = 25,560,621.82/5,171.30
  6. Step 6: Final answer
    x = 4,942.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.