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Finding the Fourth Proportional to 1,996.13, 2,995.57 and 697.60

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Solution

The fourth proportional to 1,996.13, 2,995.57 and 697.60 is: 1,046.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.13 : 2,995.57 = 697.60 : x
  2. Step 2: Convert to fraction form
    1,996.13/2,995.57 = 697.60/x
  3. Step 3: Cross multiply
    1,996.13x = 2,995.57 × 697.60
  4. Step 4: Simplify right side
    1,996.13x = 2,089,709.63
  5. Step 5: Solve for x
    x = 2,089,709.63/1,996.13
  6. Step 6: Final answer
    x = 1,046.88

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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.