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Finding the Fourth Proportional to 5,611.52, 7,749.14 and 3,519.29

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Solution

The fourth proportional to 5,611.52, 7,749.14 and 3,519.29 is: 4,859.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.52 : 7,749.14 = 3,519.29 : x
  2. Step 2: Convert to fraction form
    5,611.52/7,749.14 = 3,519.29/x
  3. Step 3: Cross multiply
    5,611.52x = 7,749.14 × 3,519.29
  4. Step 4: Simplify right side
    5,611.52x = 27,271,472.69
  5. Step 5: Solve for x
    x = 27,271,472.69/5,611.52
  6. Step 6: Final answer
    x = 4,859.91

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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.