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Finding the Fourth Proportional to 3,992.66, 5,988.92 and 1,653.92

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Solution

The fourth proportional to 3,992.66, 5,988.92 and 1,653.92 is: 2,480.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.66 : 5,988.92 = 1,653.92 : x
  2. Step 2: Convert to fraction form
    3,992.66/5,988.92 = 1,653.92/x
  3. Step 3: Cross multiply
    3,992.66x = 5,988.92 × 1,653.92
  4. Step 4: Simplify right side
    3,992.66x = 9,905,194.57
  5. Step 5: Solve for x
    x = 9,905,194.57/3,992.66
  6. Step 6: Final answer
    x = 2,480.85

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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.