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Finding the Fourth Proportional to 3,968.84, 5,953.26 and 1,661.96

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Solution

The fourth proportional to 3,968.84, 5,953.26 and 1,661.96 is: 2,492.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.84 : 5,953.26 = 1,661.96 : x
  2. Step 2: Convert to fraction form
    3,968.84/5,953.26 = 1,661.96/x
  3. Step 3: Cross multiply
    3,968.84x = 5,953.26 × 1,661.96
  4. Step 4: Simplify right side
    3,968.84x = 9,894,079.99
  5. Step 5: Solve for x
    x = 9,894,079.99/3,968.84
  6. Step 6: Final answer
    x = 2,492.94

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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.