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Finding the Third Proportional to 1,978 and 4,236

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Solution

The third proportional to 1,978 and 4,236 is: 9,071.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978 : 4,236 = 4,236 : x
  2. Step 2: Convert to fraction form
    1,978/4,236 = 4,236/x
  3. Step 3: Cross multiply
    1,978x = 4,236 × 4,236
  4. Step 4: Simplify right side
    1,978x = 17,943,696
  5. Step 5: Solve for x
    x = 17,943,696/1,978
  6. Step 6: Final answer
    x = 9,071.64

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These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.