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Finding the Fourth Proportional to 5,619, 7,754.22 and 3,135

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Solution

The fourth proportional to 5,619, 7,754.22 and 3,135 is: 4,326.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619 : 7,754.22 = 3,135 : x
  2. Step 2: Convert to fraction form
    5,619/7,754.22 = 3,135/x
  3. Step 3: Cross multiply
    5,619x = 7,754.22 × 3,135
  4. Step 4: Simplify right side
    5,619x = 24,309,479.70
  5. Step 5: Solve for x
    x = 24,309,479.70/5,619
  6. Step 6: Final answer
    x = 4,326.30

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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.