Home / 5,163.68-7,125.72-2,805.77

Finding the Fourth Proportional to 5,163.68, 7,125.72 and 2,805.77

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Solution

The fourth proportional to 5,163.68, 7,125.72 and 2,805.77 is: 3,871.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.68 : 7,125.72 = 2,805.77 : x
  2. Step 2: Convert to fraction form
    5,163.68/7,125.72 = 2,805.77/x
  3. Step 3: Cross multiply
    5,163.68x = 7,125.72 × 2,805.77
  4. Step 4: Simplify right side
    5,163.68x = 19,993,131.40
  5. Step 5: Solve for x
    x = 19,993,131.40/5,163.68
  6. Step 6: Final answer
    x = 3,871.88

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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.