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Finding the Fourth Proportional to 3,291.96, 4,936.32 and 1,343.64

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Solution

The fourth proportional to 3,291.96, 4,936.32 and 1,343.64 is: 2,014.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.96 : 4,936.32 = 1,343.64 : x
  2. Step 2: Convert to fraction form
    3,291.96/4,936.32 = 1,343.64/x
  3. Step 3: Cross multiply
    3,291.96x = 4,936.32 × 1,343.64
  4. Step 4: Simplify right side
    3,291.96x = 6,632,637.00
  5. Step 5: Solve for x
    x = 6,632,637.00/3,291.96
  6. Step 6: Final answer
    x = 2,014.80

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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.