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Finding the Fourth Proportional to 3,383.55, 5,073.96 and 1,191.78

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Solution

The fourth proportional to 3,383.55, 5,073.96 and 1,191.78 is: 1,787.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,383.55 : 5,073.96 = 1,191.78 : x
  2. Step 2: Convert to fraction form
    3,383.55/5,073.96 = 1,191.78/x
  3. Step 3: Cross multiply
    3,383.55x = 5,073.96 × 1,191.78
  4. Step 4: Simplify right side
    3,383.55x = 6,047,044.05
  5. Step 5: Solve for x
    x = 6,047,044.05/3,383.55
  6. Step 6: Final answer
    x = 1,787.19

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1.5x scale

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.