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Finding the Fourth Proportional to 3,939.96, 5,913.54 and 1,993.52

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Solution

The fourth proportional to 3,939.96, 5,913.54 and 1,993.52 is: 2,992.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.96 : 5,913.54 = 1,993.52 : x
  2. Step 2: Convert to fraction form
    3,939.96/5,913.54 = 1,993.52/x
  3. Step 3: Cross multiply
    3,939.96x = 5,913.54 × 1,993.52
  4. Step 4: Simplify right side
    3,939.96x = 11,788,760.26
  5. Step 5: Solve for x
    x = 11,788,760.26/3,939.96
  6. Step 6: Final answer
    x = 2,992.10

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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.