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Finding the Fourth Proportional to 7,005.80, 9,668.03 and 3,861.99

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Solution

The fourth proportional to 7,005.80, 9,668.03 and 3,861.99 is: 5,329.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,005.80 : 9,668.03 = 3,861.99 : x
  2. Step 2: Convert to fraction form
    7,005.80/9,668.03 = 3,861.99/x
  3. Step 3: Cross multiply
    7,005.80x = 9,668.03 × 3,861.99
  4. Step 4: Simplify right side
    7,005.80x = 37,337,815.87
  5. Step 5: Solve for x
    x = 37,337,815.87/7,005.80
  6. Step 6: Final answer
    x = 5,329.56

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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.