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Finding the Fourth Proportional to 3,181.75, 4,772.76 and 873.25

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Solution

The fourth proportional to 3,181.75, 4,772.76 and 873.25 is: 1,309.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.75 : 4,772.76 = 873.25 : x
  2. Step 2: Convert to fraction form
    3,181.75/4,772.76 = 873.25/x
  3. Step 3: Cross multiply
    3,181.75x = 4,772.76 × 873.25
  4. Step 4: Simplify right side
    3,181.75x = 4,167,812.67
  5. Step 5: Solve for x
    x = 4,167,812.67/3,181.75
  6. Step 6: Final answer
    x = 1,309.91

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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.