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Finding the Fourth Proportional to 3,181.88, 4,772.90 and 873.38

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Solution

The fourth proportional to 3,181.88, 4,772.90 and 873.38 is: 1,310.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.88 : 4,772.90 = 873.38 : x
  2. Step 2: Convert to fraction form
    3,181.88/4,772.90 = 873.38/x
  3. Step 3: Cross multiply
    3,181.88x = 4,772.90 × 873.38
  4. Step 4: Simplify right side
    3,181.88x = 4,168,533.72
  5. Step 5: Solve for x
    x = 4,168,533.72/3,181.88
  6. Step 6: Final answer
    x = 1,310.09

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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.