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Finding the Fourth Proportional to 3,921.22, 5,880.10 and 1,841.81

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Solution

The fourth proportional to 3,921.22, 5,880.10 and 1,841.81 is: 2,761.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.22 : 5,880.10 = 1,841.81 : x
  2. Step 2: Convert to fraction form
    3,921.22/5,880.10 = 1,841.81/x
  3. Step 3: Cross multiply
    3,921.22x = 5,880.10 × 1,841.81
  4. Step 4: Simplify right side
    3,921.22x = 10,830,017.77
  5. Step 5: Solve for x
    x = 10,830,017.77/3,921.22
  6. Step 6: Final answer
    x = 2,761.90

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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.