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Finding the Third Proportional to 2,135.50 and 4,418

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Solution

The third proportional to 2,135.50 and 4,418 is: 9,140.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.50 : 4,418 = 4,418 : x
  2. Step 2: Convert to fraction form
    2,135.50/4,418 = 4,418/x
  3. Step 3: Cross multiply
    2,135.50x = 4,418 × 4,418
  4. Step 4: Simplify right side
    2,135.50x = 19,518,724
  5. Step 5: Solve for x
    x = 19,518,724/2,135.50
  6. Step 6: Final answer
    x = 9,140.12

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.