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Finding the Fourth Proportional to 7,238.79, 9,991.22 and 4,095.99

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Solution

The fourth proportional to 7,238.79, 9,991.22 and 4,095.99 is: 5,653.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,238.79 : 9,991.22 = 4,095.99 : x
  2. Step 2: Convert to fraction form
    7,238.79/9,991.22 = 4,095.99/x
  3. Step 3: Cross multiply
    7,238.79x = 9,991.22 × 4,095.99
  4. Step 4: Simplify right side
    7,238.79x = 40,923,916.73
  5. Step 5: Solve for x
    x = 40,923,916.73/7,238.79
  6. Step 6: Final answer
    x = 5,653.42

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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.