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Finding the Third Proportional to 842.63 and 1,812.94

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Solution

The third proportional to 842.63 and 1,812.94 is: 3,900.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    842.63 : 1,812.94 = 1,812.94 : x
  2. Step 2: Convert to fraction form
    842.63/1,812.94 = 1,812.94/x
  3. Step 3: Cross multiply
    842.63x = 1,812.94 × 1,812.94
  4. Step 4: Simplify right side
    842.63x = 3,286,742.38
  5. Step 5: Solve for x
    x = 3,286,742.38/842.63
  6. Step 6: Final answer
    x = 3,900.60

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.