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Finding the Fourth Proportional to 5,771.94, 7,960.05 and 3,781.77

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Solution

The fourth proportional to 5,771.94, 7,960.05 and 3,781.77 is: 5,215.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,771.94 : 7,960.05 = 3,781.77 : x
  2. Step 2: Convert to fraction form
    5,771.94/7,960.05 = 3,781.77/x
  3. Step 3: Cross multiply
    5,771.94x = 7,960.05 × 3,781.77
  4. Step 4: Simplify right side
    5,771.94x = 30,103,078.29
  5. Step 5: Solve for x
    x = 30,103,078.29/5,771.94
  6. Step 6: Final answer
    x = 5,215.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.