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Finding the Fourth Proportional to 1,977.03, 2,728.20 and 1,092.91

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Solution

The fourth proportional to 1,977.03, 2,728.20 and 1,092.91 is: 1,508.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.03 : 2,728.20 = 1,092.91 : x
  2. Step 2: Convert to fraction form
    1,977.03/2,728.20 = 1,092.91/x
  3. Step 3: Cross multiply
    1,977.03x = 2,728.20 × 1,092.91
  4. Step 4: Simplify right side
    1,977.03x = 2,981,677.06
  5. Step 5: Solve for x
    x = 2,981,677.06/1,977.03
  6. Step 6: Final answer
    x = 1,508.16

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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.