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Finding the Fourth Proportional to 3,928.86, 5,892.67 and 3,711.99

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Solution

The fourth proportional to 3,928.86, 5,892.67 and 3,711.99 is: 5,567.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.86 : 5,892.67 = 3,711.99 : x
  2. Step 2: Convert to fraction form
    3,928.86/5,892.67 = 3,711.99/x
  3. Step 3: Cross multiply
    3,928.86x = 5,892.67 × 3,711.99
  4. Step 4: Simplify right side
    3,928.86x = 21,873,532.11
  5. Step 5: Solve for x
    x = 21,873,532.11/3,928.86
  6. Step 6: Final answer
    x = 5,567.40

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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.