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Finding the Fourth Proportional to 1,998.84, 2,997.36 and 1,177.32

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Solution

The fourth proportional to 1,998.84, 2,997.36 and 1,177.32 is: 1,765.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.84 : 2,997.36 = 1,177.32 : x
  2. Step 2: Convert to fraction form
    1,998.84/2,997.36 = 1,177.32/x
  3. Step 3: Cross multiply
    1,998.84x = 2,997.36 × 1,177.32
  4. Step 4: Simplify right side
    1,998.84x = 3,528,851.88
  5. Step 5: Solve for x
    x = 3,528,851.88/1,998.84
  6. Step 6: Final answer
    x = 1,765.45

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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.