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Finding the Fourth Proportional to 3,999.93, 5,964.89 and 3,781.56

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Solution

The fourth proportional to 3,999.93, 5,964.89 and 3,781.56 is: 5,639.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.93 : 5,964.89 = 3,781.56 : x
  2. Step 2: Convert to fraction form
    3,999.93/5,964.89 = 3,781.56/x
  3. Step 3: Cross multiply
    3,999.93x = 5,964.89 × 3,781.56
  4. Step 4: Simplify right side
    3,999.93x = 22,556,589.43
  5. Step 5: Solve for x
    x = 22,556,589.43/3,999.93
  6. Step 6: Final answer
    x = 5,639.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.