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Finding the Fourth Proportional to 4,781.49, 7,172.22 and 4,165.62

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Solution

The fourth proportional to 4,781.49, 7,172.22 and 4,165.62 is: 6,248.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,781.49 : 7,172.22 = 4,165.62 : x
  2. Step 2: Convert to fraction form
    4,781.49/7,172.22 = 4,165.62/x
  3. Step 3: Cross multiply
    4,781.49x = 7,172.22 × 4,165.62
  4. Step 4: Simplify right side
    4,781.49x = 29,876,743.08
  5. Step 5: Solve for x
    x = 29,876,743.08/4,781.49
  6. Step 6: Final answer
    x = 6,248.42

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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.