Home / 5,107.61-7,049.72-3,119.84

Finding the Fourth Proportional to 5,107.61, 7,049.72 and 3,119.84

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Solution

The fourth proportional to 5,107.61, 7,049.72 and 3,119.84 is: 4,306.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.61 : 7,049.72 = 3,119.84 : x
  2. Step 2: Convert to fraction form
    5,107.61/7,049.72 = 3,119.84/x
  3. Step 3: Cross multiply
    5,107.61x = 7,049.72 × 3,119.84
  4. Step 4: Simplify right side
    5,107.61x = 21,993,998.44
  5. Step 5: Solve for x
    x = 21,993,998.44/5,107.61
  6. Step 6: Final answer
    x = 4,306.12

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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.