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Finding the Fourth Proportional to 3,365.76, 5,046.36 and 1,720.97

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Solution

The fourth proportional to 3,365.76, 5,046.36 and 1,720.97 is: 2,580.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,365.76 : 5,046.36 = 1,720.97 : x
  2. Step 2: Convert to fraction form
    3,365.76/5,046.36 = 1,720.97/x
  3. Step 3: Cross multiply
    3,365.76x = 5,046.36 × 1,720.97
  4. Step 4: Simplify right side
    3,365.76x = 8,684,634.17
  5. Step 5: Solve for x
    x = 8,684,634.17/3,365.76
  6. Step 6: Final answer
    x = 2,580.29

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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.