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Finding the Fourth Proportional to 7,222.50, 10,838.61 and 2,605.50

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Solution

The fourth proportional to 7,222.50, 10,838.61 and 2,605.50 is: 3,910.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.50 : 10,838.61 = 2,605.50 : x
  2. Step 2: Convert to fraction form
    7,222.50/10,838.61 = 2,605.50/x
  3. Step 3: Cross multiply
    7,222.50x = 10,838.61 × 2,605.50
  4. Step 4: Simplify right side
    7,222.50x = 28,239,998.36
  5. Step 5: Solve for x
    x = 28,239,998.36/7,222.50
  6. Step 6: Final answer
    x = 3,910.00

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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.