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Finding the Fourth Proportional to 8,119.26, 12,174.26 and 2,574

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Solution

The fourth proportional to 8,119.26, 12,174.26 and 2,574 is: 3,859.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.26 : 12,174.26 = 2,574 : x
  2. Step 2: Convert to fraction form
    8,119.26/12,174.26 = 2,574/x
  3. Step 3: Cross multiply
    8,119.26x = 12,174.26 × 2,574
  4. Step 4: Simplify right side
    8,119.26x = 31,336,545.24
  5. Step 5: Solve for x
    x = 31,336,545.24/8,119.26
  6. Step 6: Final answer
    x = 3,859.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.