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Finding the Third Proportional to 1,139.44 and 1,706.63

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Solution

The third proportional to 1,139.44 and 1,706.63 is: 2,556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139.44 : 1,706.63 = 1,706.63 : x
  2. Step 2: Convert to fraction form
    1,139.44/1,706.63 = 1,706.63/x
  3. Step 3: Cross multiply
    1,139.44x = 1,706.63 × 1,706.63
  4. Step 4: Simplify right side
    1,139.44x = 2,912,568.89
  5. Step 5: Solve for x
    x = 2,912,568.89/1,139.44
  6. Step 6: Final answer
    x = 2,556.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.