Home / 5,163.72-7,125.90-2,805.84

Finding the Fourth Proportional to 5,163.72, 7,125.90 and 2,805.84

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Solution

The fourth proportional to 5,163.72, 7,125.90 and 2,805.84 is: 3,872.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163.72 : 7,125.90 = 2,805.84 : x
  2. Step 2: Convert to fraction form
    5,163.72/7,125.90 = 2,805.84/x
  3. Step 3: Cross multiply
    5,163.72x = 7,125.90 × 2,805.84
  4. Step 4: Simplify right side
    5,163.72x = 19,994,135.26
  5. Step 5: Solve for x
    x = 19,994,135.26/5,163.72
  6. Step 6: Final answer
    x = 3,872.04

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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.