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Finding the Fourth Proportional to 1,847.85, 2,772.45 and 873.22

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Solution

The fourth proportional to 1,847.85, 2,772.45 and 873.22 is: 1,310.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,847.85 : 2,772.45 = 873.22 : x
  2. Step 2: Convert to fraction form
    1,847.85/2,772.45 = 873.22/x
  3. Step 3: Cross multiply
    1,847.85x = 2,772.45 × 873.22
  4. Step 4: Simplify right side
    1,847.85x = 2,420,958.79
  5. Step 5: Solve for x
    x = 2,420,958.79/1,847.85
  6. Step 6: Final answer
    x = 1,310.15

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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.