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Finding the Fourth Proportional to 3,960.99, 5,939.37 and 1,327.50

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Solution

The fourth proportional to 3,960.99, 5,939.37 and 1,327.50 is: 1,990.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.99 : 5,939.37 = 1,327.50 : x
  2. Step 2: Convert to fraction form
    3,960.99/5,939.37 = 1,327.50/x
  3. Step 3: Cross multiply
    3,960.99x = 5,939.37 × 1,327.50
  4. Step 4: Simplify right side
    3,960.99x = 7,884,513.68
  5. Step 5: Solve for x
    x = 7,884,513.68/3,960.99
  6. Step 6: Final answer
    x = 1,990.54

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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.