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Finding the Fourth Proportional to 7,239.38, 9,990.27 and 4,095.56

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Solution

The fourth proportional to 7,239.38, 9,990.27 and 4,095.56 is: 5,651.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.38 : 9,990.27 = 4,095.56 : x
  2. Step 2: Convert to fraction form
    7,239.38/9,990.27 = 4,095.56/x
  3. Step 3: Cross multiply
    7,239.38x = 9,990.27 × 4,095.56
  4. Step 4: Simplify right side
    7,239.38x = 40,915,775.18
  5. Step 5: Solve for x
    x = 40,915,775.18/7,239.38
  6. Step 6: Final answer
    x = 5,651.84

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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.