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Finding the Fourth Proportional to 12,608.96, 18,915.94 and 3,724.45

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Solution

The fourth proportional to 12,608.96, 18,915.94 and 3,724.45 is: 5,587.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,608.96 : 18,915.94 = 3,724.45 : x
  2. Step 2: Convert to fraction form
    12,608.96/18,915.94 = 3,724.45/x
  3. Step 3: Cross multiply
    12,608.96x = 18,915.94 × 3,724.45
  4. Step 4: Simplify right side
    12,608.96x = 70,451,416.13
  5. Step 5: Solve for x
    x = 70,451,416.13/12,608.96
  6. Step 6: Final answer
    x = 5,587.41

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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.