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Finding the Fourth Proportional to 1,599.78, 2,396.84 and 1,111.89

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Solution

The fourth proportional to 1,599.78, 2,396.84 and 1,111.89 is: 1,665.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,599.78 : 2,396.84 = 1,111.89 : x
  2. Step 2: Convert to fraction form
    1,599.78/2,396.84 = 1,111.89/x
  3. Step 3: Cross multiply
    1,599.78x = 2,396.84 × 1,111.89
  4. Step 4: Simplify right side
    1,599.78x = 2,665,016.87
  5. Step 5: Solve for x
    x = 2,665,016.87/1,599.78
  6. Step 6: Final answer
    x = 1,665.86

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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.