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Finding the Third Proportional to 999.84 and 2,172.94

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Solution

The third proportional to 999.84 and 2,172.94 is: 4,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    999.84 : 2,172.94 = 2,172.94 : x
  2. Step 2: Convert to fraction form
    999.84/2,172.94 = 2,172.94/x
  3. Step 3: Cross multiply
    999.84x = 2,172.94 × 2,172.94
  4. Step 4: Simplify right side
    999.84x = 4,721,657.38
  5. Step 5: Solve for x
    x = 4,721,657.38/999.84
  6. Step 6: Final answer
    x = 4,722.40

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.