Home / 676.50-1,311

Finding the Third Proportional to 676.50 and 1,311

Calculator

Solution

The third proportional to 676.50 and 1,311 is: 2,540.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.50 : 1,311 = 1,311 : x
  2. Step 2: Convert to fraction form
    676.50/1,311 = 1,311/x
  3. Step 3: Cross multiply
    676.50x = 1,311 × 1,311
  4. Step 4: Simplify right side
    676.50x = 1,718,721
  5. Step 5: Solve for x
    x = 1,718,721/676.50
  6. Step 6: Final answer
    x = 2,540.61

Related Problems

Find third proportional to 338.25 and 655.50
Half scale
Find third proportional to 1,353 and 2,622
Double scale
Find third proportional to 679 and 1,315
Similar ratio
Find third proportional to 1,014.75 and 1,966.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.94) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.