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Finding the Third Proportional to 2,178 and 2,700

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Solution

The third proportional to 2,178 and 2,700 is: 3,347.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178 : 2,700 = 2,700 : x
  2. Step 2: Convert to fraction form
    2,178/2,700 = 2,700/x
  3. Step 3: Cross multiply
    2,178x = 2,700 × 2,700
  4. Step 4: Simplify right side
    2,178x = 7,290,000
  5. Step 5: Solve for x
    x = 7,290,000/2,178
  6. Step 6: Final answer
    x = 3,347.11

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Why These Related Problems?

These problems maintain the same ratio (1.24) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.