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Finding the Third Proportional to 3,492 and 5,431.50

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Solution

The third proportional to 3,492 and 5,431.50 is: 8,448.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,492 : 5,431.50 = 5,431.50 : x
  2. Step 2: Convert to fraction form
    3,492/5,431.50 = 5,431.50/x
  3. Step 3: Cross multiply
    3,492x = 5,431.50 × 5,431.50
  4. Step 4: Simplify right side
    3,492x = 29,501,192.25
  5. Step 5: Solve for x
    x = 29,501,192.25/3,492
  6. Step 6: Final answer
    x = 8,448.22

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.