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Finding the Fourth Proportional to 3,383.52, 5,068.80 and 1,918.32

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Solution

The fourth proportional to 3,383.52, 5,068.80 and 1,918.32 is: 2,873.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,383.52 : 5,068.80 = 1,918.32 : x
  2. Step 2: Convert to fraction form
    3,383.52/5,068.80 = 1,918.32/x
  3. Step 3: Cross multiply
    3,383.52x = 5,068.80 × 1,918.32
  4. Step 4: Simplify right side
    3,383.52x = 9,723,580.42
  5. Step 5: Solve for x
    x = 9,723,580.42/3,383.52
  6. Step 6: Final answer
    x = 2,873.81

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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.