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Finding the Third Proportional to 2,916.50 and 4,518.75

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Solution

The third proportional to 2,916.50 and 4,518.75 is: 7,001.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.50 : 4,518.75 = 4,518.75 : x
  2. Step 2: Convert to fraction form
    2,916.50/4,518.75 = 4,518.75/x
  3. Step 3: Cross multiply
    2,916.50x = 4,518.75 × 4,518.75
  4. Step 4: Simplify right side
    2,916.50x = 20,419,101.56
  5. Step 5: Solve for x
    x = 20,419,101.56/2,916.50
  6. Step 6: Final answer
    x = 7,001.23

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.