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Finding the Third Proportional to 1,688.50 and 3,575

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Solution

The third proportional to 1,688.50 and 3,575 is: 7,569.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.50 : 3,575 = 3,575 : x
  2. Step 2: Convert to fraction form
    1,688.50/3,575 = 3,575/x
  3. Step 3: Cross multiply
    1,688.50x = 3,575 × 3,575
  4. Step 4: Simplify right side
    1,688.50x = 12,780,625
  5. Step 5: Solve for x
    x = 12,780,625/1,688.50
  6. Step 6: Final answer
    x = 7,569.22

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.