Home / 2,112.21-3,164.85-724.80

Finding the Fourth Proportional to 2,112.21, 3,164.85 and 724.80

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Solution

The fourth proportional to 2,112.21, 3,164.85 and 724.80 is: 1,086.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.21 : 3,164.85 = 724.80 : x
  2. Step 2: Convert to fraction form
    2,112.21/3,164.85 = 724.80/x
  3. Step 3: Cross multiply
    2,112.21x = 3,164.85 × 724.80
  4. Step 4: Simplify right side
    2,112.21x = 2,293,883.28
  5. Step 5: Solve for x
    x = 2,293,883.28/2,112.21
  6. Step 6: Final answer
    x = 1,086.01

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.