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Finding the Third Proportional to 1,971.56 and 2,556.84

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Solution

The third proportional to 1,971.56 and 2,556.84 is: 3,315.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.56 : 2,556.84 = 2,556.84 : x
  2. Step 2: Convert to fraction form
    1,971.56/2,556.84 = 2,556.84/x
  3. Step 3: Cross multiply
    1,971.56x = 2,556.84 × 2,556.84
  4. Step 4: Simplify right side
    1,971.56x = 6,537,449.96
  5. Step 5: Solve for x
    x = 6,537,449.96/1,971.56
  6. Step 6: Final answer
    x = 3,315.87

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.