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Finding the Fourth Proportional to 3,893.84, 5,373.40 and 3,580.37

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Solution

The fourth proportional to 3,893.84, 5,373.40 and 3,580.37 is: 4,940.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.84 : 5,373.40 = 3,580.37 : x
  2. Step 2: Convert to fraction form
    3,893.84/5,373.40 = 3,580.37/x
  3. Step 3: Cross multiply
    3,893.84x = 5,373.40 × 3,580.37
  4. Step 4: Simplify right side
    3,893.84x = 19,238,764.64
  5. Step 5: Solve for x
    x = 19,238,764.64/3,893.84
  6. Step 6: Final answer
    x = 4,940.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.