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Finding the Fourth Proportional to 7,622.65, 11,436.81 and 3,243.52

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Solution

The fourth proportional to 7,622.65, 11,436.81 and 3,243.52 is: 4,866.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,622.65 : 11,436.81 = 3,243.52 : x
  2. Step 2: Convert to fraction form
    7,622.65/11,436.81 = 3,243.52/x
  3. Step 3: Cross multiply
    7,622.65x = 11,436.81 × 3,243.52
  4. Step 4: Simplify right side
    7,622.65x = 37,095,521.97
  5. Step 5: Solve for x
    x = 37,095,521.97/7,622.65
  6. Step 6: Final answer
    x = 4,866.49

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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.