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Finding the Fourth Proportional to 7,168.67, 9,892.27 and 3,981.70

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Solution

The fourth proportional to 7,168.67, 9,892.27 and 3,981.70 is: 5,494.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,168.67 : 9,892.27 = 3,981.70 : x
  2. Step 2: Convert to fraction form
    7,168.67/9,892.27 = 3,981.70/x
  3. Step 3: Cross multiply
    7,168.67x = 9,892.27 × 3,981.70
  4. Step 4: Simplify right side
    7,168.67x = 39,388,068.80
  5. Step 5: Solve for x
    x = 39,388,068.80/7,168.67
  6. Step 6: Final answer
    x = 5,494.47

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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.