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Finding the Fourth Proportional to 1,396.73, 2,090.99 and 1,200.36

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Solution

The fourth proportional to 1,396.73, 2,090.99 and 1,200.36 is: 1,797.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.73 : 2,090.99 = 1,200.36 : x
  2. Step 2: Convert to fraction form
    1,396.73/2,090.99 = 1,200.36/x
  3. Step 3: Cross multiply
    1,396.73x = 2,090.99 × 1,200.36
  4. Step 4: Simplify right side
    1,396.73x = 2,509,940.76
  5. Step 5: Solve for x
    x = 2,509,940.76/1,396.73
  6. Step 6: Final answer
    x = 1,797.01

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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.