Home / 2,489.23-3,728.78-1,996.75

Finding the Fourth Proportional to 2,489.23, 3,728.78 and 1,996.75

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Solution

The fourth proportional to 2,489.23, 3,728.78 and 1,996.75 is: 2,991.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.23 : 3,728.78 = 1,996.75 : x
  2. Step 2: Convert to fraction form
    2,489.23/3,728.78 = 1,996.75/x
  3. Step 3: Cross multiply
    2,489.23x = 3,728.78 × 1,996.75
  4. Step 4: Simplify right side
    2,489.23x = 7,445,412.84
  5. Step 5: Solve for x
    x = 7,445,412.84/2,489.23
  6. Step 6: Final answer
    x = 2,991.06

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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.