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Finding the Fourth Proportional to 3,423.93, 5,136.09 and 925.50

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Solution

The fourth proportional to 3,423.93, 5,136.09 and 925.50 is: 1,388.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.93 : 5,136.09 = 925.50 : x
  2. Step 2: Convert to fraction form
    3,423.93/5,136.09 = 925.50/x
  3. Step 3: Cross multiply
    3,423.93x = 5,136.09 × 925.50
  4. Step 4: Simplify right side
    3,423.93x = 4,753,451.30
  5. Step 5: Solve for x
    x = 4,753,451.30/3,423.93
  6. Step 6: Final answer
    x = 1,388.30

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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.