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Finding the Fourth Proportional to 2,388.97, 3,583.36 and 983.34

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Solution

The fourth proportional to 2,388.97, 3,583.36 and 983.34 is: 1,474.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,388.97 : 3,583.36 = 983.34 : x
  2. Step 2: Convert to fraction form
    2,388.97/3,583.36 = 983.34/x
  3. Step 3: Cross multiply
    2,388.97x = 3,583.36 × 983.34
  4. Step 4: Simplify right side
    2,388.97x = 3,523,661.22
  5. Step 5: Solve for x
    x = 3,523,661.22/2,388.97
  6. Step 6: Final answer
    x = 1,474.97

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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.