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Finding the Fourth Proportional to 3,161.67, 4,741.84 and 940.51

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Solution

The fourth proportional to 3,161.67, 4,741.84 and 940.51 is: 1,410.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.67 : 4,741.84 = 940.51 : x
  2. Step 2: Convert to fraction form
    3,161.67/4,741.84 = 940.51/x
  3. Step 3: Cross multiply
    3,161.67x = 4,741.84 × 940.51
  4. Step 4: Simplify right side
    3,161.67x = 4,459,755.04
  5. Step 5: Solve for x
    x = 4,459,755.04/3,161.67
  6. Step 6: Final answer
    x = 1,410.57

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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.