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Finding the Fourth Proportional to 7,309.99, 10,965.12 and 2,379.61

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Solution

The fourth proportional to 7,309.99, 10,965.12 and 2,379.61 is: 3,569.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,309.99 : 10,965.12 = 2,379.61 : x
  2. Step 2: Convert to fraction form
    7,309.99/10,965.12 = 2,379.61/x
  3. Step 3: Cross multiply
    7,309.99x = 10,965.12 × 2,379.61
  4. Step 4: Simplify right side
    7,309.99x = 26,092,709.20
  5. Step 5: Solve for x
    x = 26,092,709.20/7,309.99
  6. Step 6: Final answer
    x = 3,569.46

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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.