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Finding the Third Proportional to 1,651.50 and 2,640

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Solution

The third proportional to 1,651.50 and 2,640 is: 4,220.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,651.50 : 2,640 = 2,640 : x
  2. Step 2: Convert to fraction form
    1,651.50/2,640 = 2,640/x
  3. Step 3: Cross multiply
    1,651.50x = 2,640 × 2,640
  4. Step 4: Simplify right side
    1,651.50x = 6,969,600
  5. Step 5: Solve for x
    x = 6,969,600/1,651.50
  6. Step 6: Final answer
    x = 4,220.16

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.