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Finding the Fourth Proportional to 3,969.96, 5,954.94 and 1,663.08

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Solution

The fourth proportional to 3,969.96, 5,954.94 and 1,663.08 is: 2,494.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.96 : 5,954.94 = 1,663.08 : x
  2. Step 2: Convert to fraction form
    3,969.96/5,954.94 = 1,663.08/x
  3. Step 3: Cross multiply
    3,969.96x = 5,954.94 × 1,663.08
  4. Step 4: Simplify right side
    3,969.96x = 9,903,541.62
  5. Step 5: Solve for x
    x = 9,903,541.62/3,969.96
  6. Step 6: Final answer
    x = 2,494.62

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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.