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Finding the Fourth Proportional to 8,369.47, 12,553.69 and 3,438.99

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Solution

The fourth proportional to 8,369.47, 12,553.69 and 3,438.99 is: 5,158.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,369.47 : 12,553.69 = 3,438.99 : x
  2. Step 2: Convert to fraction form
    8,369.47/12,553.69 = 3,438.99/x
  3. Step 3: Cross multiply
    8,369.47x = 12,553.69 × 3,438.99
  4. Step 4: Simplify right side
    8,369.47x = 43,171,968.94
  5. Step 5: Solve for x
    x = 43,171,968.94/8,369.47
  6. Step 6: Final answer
    x = 5,158.27

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1.5x scale

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.