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Finding the Fourth Proportional to 7,940.50, 10,958.03 and 4,355.79

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Solution

The fourth proportional to 7,940.50, 10,958.03 and 4,355.79 is: 6,011.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.50 : 10,958.03 = 4,355.79 : x
  2. Step 2: Convert to fraction form
    7,940.50/10,958.03 = 4,355.79/x
  3. Step 3: Cross multiply
    7,940.50x = 10,958.03 × 4,355.79
  4. Step 4: Simplify right side
    7,940.50x = 47,730,912.65
  5. Step 5: Solve for x
    x = 47,730,912.65/7,940.50
  6. Step 6: Final answer
    x = 6,011.07

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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.