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Finding the Fourth Proportional to 3,361.67, 5,040.98 and 1,412.81

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Solution

The fourth proportional to 3,361.67, 5,040.98 and 1,412.81 is: 2,118.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,361.67 : 5,040.98 = 1,412.81 : x
  2. Step 2: Convert to fraction form
    3,361.67/5,040.98 = 1,412.81/x
  3. Step 3: Cross multiply
    3,361.67x = 5,040.98 × 1,412.81
  4. Step 4: Simplify right side
    3,361.67x = 7,121,939.89
  5. Step 5: Solve for x
    x = 7,121,939.89/3,361.67
  6. Step 6: Final answer
    x = 2,118.57

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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.