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Finding the Fourth Proportional to 8,474.39, 11,693.24 and 5,645.99

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Solution

The fourth proportional to 8,474.39, 11,693.24 and 5,645.99 is: 7,790.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.39 : 11,693.24 = 5,645.99 : x
  2. Step 2: Convert to fraction form
    8,474.39/11,693.24 = 5,645.99/x
  3. Step 3: Cross multiply
    8,474.39x = 11,693.24 × 5,645.99
  4. Step 4: Simplify right side
    8,474.39x = 66,019,916.11
  5. Step 5: Solve for x
    x = 66,019,916.11/8,474.39
  6. Step 6: Final answer
    x = 7,790.52

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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.