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Finding the Fourth Proportional to 3,671.67, 5,504.21 and 1,331.11

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Solution

The fourth proportional to 3,671.67, 5,504.21 and 1,331.11 is: 1,995.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,671.67 : 5,504.21 = 1,331.11 : x
  2. Step 2: Convert to fraction form
    3,671.67/5,504.21 = 1,331.11/x
  3. Step 3: Cross multiply
    3,671.67x = 5,504.21 × 1,331.11
  4. Step 4: Simplify right side
    3,671.67x = 7,326,702.32
  5. Step 5: Solve for x
    x = 7,326,702.32/3,671.67
  6. Step 6: Final answer
    x = 1,995.47

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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.