Home / 786.75-1,398.75

Finding the Third Proportional to 786.75 and 1,398.75

Calculator

Solution

The third proportional to 786.75 and 1,398.75 is: 2,486.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    786.75 : 1,398.75 = 1,398.75 : x
  2. Step 2: Convert to fraction form
    786.75/1,398.75 = 1,398.75/x
  3. Step 3: Cross multiply
    786.75x = 1,398.75 × 1,398.75
  4. Step 4: Simplify right side
    786.75x = 1,956,501.56
  5. Step 5: Solve for x
    x = 1,956,501.56/786.75
  6. Step 6: Final answer
    x = 2,486.81

Related Problems

Find third proportional to 393.38 and 699.38
Half scale
Find third proportional to 1,573.50 and 2,797.50
Double scale
Find third proportional to 789 and 1,402
Similar ratio
Find third proportional to 1,180.13 and 2,098.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.