Home / 5,163.89-7,125.98-2,805.95

Finding the Fourth Proportional to 5,163.89, 7,125.98 and 2,805.95

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Solution

The fourth proportional to 5,163.89, 7,125.98 and 2,805.95 is: 3,872.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.89 : 7,125.98 = 2,805.95 : x
  2. Step 2: Convert to fraction form
    5,163.89/7,125.98 = 2,805.95/x
  3. Step 3: Cross multiply
    5,163.89x = 7,125.98 × 2,805.95
  4. Step 4: Simplify right side
    5,163.89x = 19,995,129.55
  5. Step 5: Solve for x
    x = 19,995,129.55/5,163.89
  6. Step 6: Final answer
    x = 3,872.11

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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.