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Finding the Fourth Proportional to 1,995.14, 2,993.97 and 840.89

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Solution

The fourth proportional to 1,995.14, 2,993.97 and 840.89 is: 1,261.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995.14 : 2,993.97 = 840.89 : x
  2. Step 2: Convert to fraction form
    1,995.14/2,993.97 = 840.89/x
  3. Step 3: Cross multiply
    1,995.14x = 2,993.97 × 840.89
  4. Step 4: Simplify right side
    1,995.14x = 2,517,599.43
  5. Step 5: Solve for x
    x = 2,517,599.43/1,995.14
  6. Step 6: Final answer
    x = 1,261.87

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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.