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Finding the Third Proportional to 7,620 and 12,057

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Solution

The third proportional to 7,620 and 12,057 is: 19,077.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620 : 12,057 = 12,057 : x
  2. Step 2: Convert to fraction form
    7,620/12,057 = 12,057/x
  3. Step 3: Cross multiply
    7,620x = 12,057 × 12,057
  4. Step 4: Simplify right side
    7,620x = 145,371,249
  5. Step 5: Solve for x
    x = 145,371,249/7,620
  6. Step 6: Final answer
    x = 19,077.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.