Home / 695-1,291

Finding the Third Proportional to 695 and 1,291

Calculator

Solution

The third proportional to 695 and 1,291 is: 2,398.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    695 : 1,291 = 1,291 : x
  2. Step 2: Convert to fraction form
    695/1,291 = 1,291/x
  3. Step 3: Cross multiply
    695x = 1,291 × 1,291
  4. Step 4: Simplify right side
    695x = 1,666,681
  5. Step 5: Solve for x
    x = 1,666,681/695
  6. Step 6: Final answer
    x = 2,398.10

Related Problems

Find third proportional to 347.50 and 645.50
Half scale
Find third proportional to 1,390 and 2,582
Double scale
Find third proportional to 697 and 1,295
Similar ratio
Find third proportional to 1,042.50 and 1,936.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.