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Finding the Fourth Proportional to 1,994.97, 2,754.18 and 1,551.90

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Solution

The fourth proportional to 1,994.97, 2,754.18 and 1,551.90 is: 2,142.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,994.97 : 2,754.18 = 1,551.90 : x
  2. Step 2: Convert to fraction form
    1,994.97/2,754.18 = 1,551.90/x
  3. Step 3: Cross multiply
    1,994.97x = 2,754.18 × 1,551.90
  4. Step 4: Simplify right side
    1,994.97x = 4,274,211.94
  5. Step 5: Solve for x
    x = 4,274,211.94/1,994.97
  6. Step 6: Final answer
    x = 2,142.49

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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.