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Finding the Fourth Proportional to 3,813.96, 5,716.98 and 1,960.95

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Solution

The fourth proportional to 3,813.96, 5,716.98 and 1,960.95 is: 2,939.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.96 : 5,716.98 = 1,960.95 : x
  2. Step 2: Convert to fraction form
    3,813.96/5,716.98 = 1,960.95/x
  3. Step 3: Cross multiply
    3,813.96x = 5,716.98 × 1,960.95
  4. Step 4: Simplify right side
    3,813.96x = 11,210,711.93
  5. Step 5: Solve for x
    x = 11,210,711.93/3,813.96
  6. Step 6: Final answer
    x = 2,939.39

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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.