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Finding the Fourth Proportional to 7,168.85, 9,892.69 and 3,982.36

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Solution

The fourth proportional to 7,168.85, 9,892.69 and 3,982.36 is: 5,495.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168.85 : 9,892.69 = 3,982.36 : x
  2. Step 2: Convert to fraction form
    7,168.85/9,892.69 = 3,982.36/x
  3. Step 3: Cross multiply
    7,168.85x = 9,892.69 × 3,982.36
  4. Step 4: Simplify right side
    7,168.85x = 39,396,252.95
  5. Step 5: Solve for x
    x = 39,396,252.95/7,168.85
  6. Step 6: Final answer
    x = 5,495.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.