Home / 5,161.12-7,115.70-4,216

Finding the Fourth Proportional to 5,161.12, 7,115.70 and 4,216

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Solution

The fourth proportional to 5,161.12, 7,115.70 and 4,216 is: 5,812.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.12 : 7,115.70 = 4,216 : x
  2. Step 2: Convert to fraction form
    5,161.12/7,115.70 = 4,216/x
  3. Step 3: Cross multiply
    5,161.12x = 7,115.70 × 4,216
  4. Step 4: Simplify right side
    5,161.12x = 29,999,791.20
  5. Step 5: Solve for x
    x = 29,999,791.20/5,161.12
  6. Step 6: Final answer
    x = 5,812.65

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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.