Home / 5,163.75-7,125.78-2,805.84

Finding the Fourth Proportional to 5,163.75, 7,125.78 and 2,805.84

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Solution

The fourth proportional to 5,163.75, 7,125.78 and 2,805.84 is: 3,871.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.75 : 7,125.78 = 2,805.84 : x
  2. Step 2: Convert to fraction form
    5,163.75/7,125.78 = 2,805.84/x
  3. Step 3: Cross multiply
    5,163.75x = 7,125.78 × 2,805.84
  4. Step 4: Simplify right side
    5,163.75x = 19,993,798.56
  5. Step 5: Solve for x
    x = 19,993,798.56/5,163.75
  6. Step 6: Final answer
    x = 3,871.95

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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.