Home / 5,147.12-7,104.84-3,161

Finding the Fourth Proportional to 5,147.12, 7,104.84 and 3,161

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Solution

The fourth proportional to 5,147.12, 7,104.84 and 3,161 is: 4,363.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.12 : 7,104.84 = 3,161 : x
  2. Step 2: Convert to fraction form
    5,147.12/7,104.84 = 3,161/x
  3. Step 3: Cross multiply
    5,147.12x = 7,104.84 × 3,161
  4. Step 4: Simplify right side
    5,147.12x = 22,458,399.24
  5. Step 5: Solve for x
    x = 22,458,399.24/5,147.12
  6. Step 6: Final answer
    x = 4,363.29

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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.