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Finding the Fourth Proportional to 2,728.47, 4,093.31 and 997.09

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Solution

The fourth proportional to 2,728.47, 4,093.31 and 997.09 is: 1,495.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.47 : 4,093.31 = 997.09 : x
  2. Step 2: Convert to fraction form
    2,728.47/4,093.31 = 997.09/x
  3. Step 3: Cross multiply
    2,728.47x = 4,093.31 × 997.09
  4. Step 4: Simplify right side
    2,728.47x = 4,081,398.47
  5. Step 5: Solve for x
    x = 4,081,398.47/2,728.47
  6. Step 6: Final answer
    x = 1,495.86

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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.