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Finding the Fourth Proportional to 7,553.90, 11,334.90 and 3,171.80

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Solution

The fourth proportional to 7,553.90, 11,334.90 and 3,171.80 is: 4,759.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,553.90 : 11,334.90 = 3,171.80 : x
  2. Step 2: Convert to fraction form
    7,553.90/11,334.90 = 3,171.80/x
  3. Step 3: Cross multiply
    7,553.90x = 11,334.90 × 3,171.80
  4. Step 4: Simplify right side
    7,553.90x = 35,952,035.82
  5. Step 5: Solve for x
    x = 35,952,035.82/7,553.90
  6. Step 6: Final answer
    x = 4,759.40

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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.