Home / 5,309.11-7,961.30-2,186.56

Finding the Fourth Proportional to 5,309.11, 7,961.30 and 2,186.56

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Solution

The fourth proportional to 5,309.11, 7,961.30 and 2,186.56 is: 3,278.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309.11 : 7,961.30 = 2,186.56 : x
  2. Step 2: Convert to fraction form
    5,309.11/7,961.30 = 2,186.56/x
  3. Step 3: Cross multiply
    5,309.11x = 7,961.30 × 2,186.56
  4. Step 4: Simplify right side
    5,309.11x = 17,407,860.13
  5. Step 5: Solve for x
    x = 17,407,860.13/5,309.11
  6. Step 6: Final answer
    x = 3,278.87

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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.