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Finding the Fourth Proportional to 3,992.76, 5,985.36 and 2,040.66

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Solution

The fourth proportional to 3,992.76, 5,985.36 and 2,040.66 is: 3,059.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.76 : 5,985.36 = 2,040.66 : x
  2. Step 2: Convert to fraction form
    3,992.76/5,985.36 = 2,040.66/x
  3. Step 3: Cross multiply
    3,992.76x = 5,985.36 × 2,040.66
  4. Step 4: Simplify right side
    3,992.76x = 12,214,084.74
  5. Step 5: Solve for x
    x = 12,214,084.74/3,992.76
  6. Step 6: Final answer
    x = 3,059.06

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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.