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Finding the Fourth Proportional to 11,606.25, 17,409.78 and 3,815.67

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Solution

The fourth proportional to 11,606.25, 17,409.78 and 3,815.67 is: 5,723.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,606.25 : 17,409.78 = 3,815.67 : x
  2. Step 2: Convert to fraction form
    11,606.25/17,409.78 = 3,815.67/x
  3. Step 3: Cross multiply
    11,606.25x = 17,409.78 × 3,815.67
  4. Step 4: Simplify right side
    11,606.25x = 66,429,975.25
  5. Step 5: Solve for x
    x = 66,429,975.25/11,606.25
  6. Step 6: Final answer
    x = 5,723.64

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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.