Home / 3,412.55-5,114.68-1,928.09

Finding the Fourth Proportional to 3,412.55, 5,114.68 and 1,928.09

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Solution

The fourth proportional to 3,412.55, 5,114.68 and 1,928.09 is: 2,889.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.55 : 5,114.68 = 1,928.09 : x
  2. Step 2: Convert to fraction form
    3,412.55/5,114.68 = 1,928.09/x
  3. Step 3: Cross multiply
    3,412.55x = 5,114.68 × 1,928.09
  4. Step 4: Simplify right side
    3,412.55x = 9,861,571.33
  5. Step 5: Solve for x
    x = 9,861,571.33/3,412.55
  6. Step 6: Final answer
    x = 2,889.79

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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.