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Finding the Fourth Proportional to 3,958.99, 5,453.89 and 3,329.53

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Solution

The fourth proportional to 3,958.99, 5,453.89 and 3,329.53 is: 4,586.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,958.99 : 5,453.89 = 3,329.53 : x
  2. Step 2: Convert to fraction form
    3,958.99/5,453.89 = 3,329.53/x
  3. Step 3: Cross multiply
    3,958.99x = 5,453.89 × 3,329.53
  4. Step 4: Simplify right side
    3,958.99x = 18,158,868.41
  5. Step 5: Solve for x
    x = 18,158,868.41/3,958.99
  6. Step 6: Final answer
    x = 4,586.75

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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.