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Finding the Third Proportional to 5,492 and 8,172.50

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Solution

The third proportional to 5,492 and 8,172.50 is: 12,161.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,492 : 8,172.50 = 8,172.50 : x
  2. Step 2: Convert to fraction form
    5,492/8,172.50 = 8,172.50/x
  3. Step 3: Cross multiply
    5,492x = 8,172.50 × 8,172.50
  4. Step 4: Simplify right side
    5,492x = 66,789,756.25
  5. Step 5: Solve for x
    x = 66,789,756.25/5,492
  6. Step 6: Final answer
    x = 12,161.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.