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Finding the Fourth Proportional to 7,092.90, 10,639.89 and 3,396.78

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Solution

The fourth proportional to 7,092.90, 10,639.89 and 3,396.78 is: 5,095.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,092.90 : 10,639.89 = 3,396.78 : x
  2. Step 2: Convert to fraction form
    7,092.90/10,639.89 = 3,396.78/x
  3. Step 3: Cross multiply
    7,092.90x = 10,639.89 × 3,396.78
  4. Step 4: Simplify right side
    7,092.90x = 36,141,365.55
  5. Step 5: Solve for x
    x = 36,141,365.55/7,092.90
  6. Step 6: Final answer
    x = 5,095.43

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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.