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Finding the Fourth Proportional to 3,921.46, 5,882.12 and 1,840.98

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Solution

The fourth proportional to 3,921.46, 5,882.12 and 1,840.98 is: 2,761.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.46 : 5,882.12 = 1,840.98 : x
  2. Step 2: Convert to fraction form
    3,921.46/5,882.12 = 1,840.98/x
  3. Step 3: Cross multiply
    3,921.46x = 5,882.12 × 1,840.98
  4. Step 4: Simplify right side
    3,921.46x = 10,828,865.28
  5. Step 5: Solve for x
    x = 10,828,865.28/3,921.46
  6. Step 6: Final answer
    x = 2,761.44

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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.