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Finding the Third Proportional to 4,891.50 and 7,577.50

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Solution

The third proportional to 4,891.50 and 7,577.50 is: 11,738.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,891.50 : 7,577.50 = 7,577.50 : x
  2. Step 2: Convert to fraction form
    4,891.50/7,577.50 = 7,577.50/x
  3. Step 3: Cross multiply
    4,891.50x = 7,577.50 × 7,577.50
  4. Step 4: Simplify right side
    4,891.50x = 57,418,506.25
  5. Step 5: Solve for x
    x = 57,418,506.25/4,891.50
  6. Step 6: Final answer
    x = 11,738.43

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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.