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Finding the Fourth Proportional to 7,239.56, 10,859.76 and 2,045

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Solution

The fourth proportional to 7,239.56, 10,859.76 and 2,045 is: 3,067.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.56 : 10,859.76 = 2,045 : x
  2. Step 2: Convert to fraction form
    7,239.56/10,859.76 = 2,045/x
  3. Step 3: Cross multiply
    7,239.56x = 10,859.76 × 2,045
  4. Step 4: Simplify right side
    7,239.56x = 22,208,209.20
  5. Step 5: Solve for x
    x = 22,208,209.20/7,239.56
  6. Step 6: Final answer
    x = 3,067.62

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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.