Home / 379.25-812.75

Finding the Third Proportional to 379.25 and 812.75

Calculator

Solution

The third proportional to 379.25 and 812.75 is: 1,741.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.25 : 812.75 = 812.75 : x
  2. Step 2: Convert to fraction form
    379.25/812.75 = 812.75/x
  3. Step 3: Cross multiply
    379.25x = 812.75 × 812.75
  4. Step 4: Simplify right side
    379.25x = 660,562.56
  5. Step 5: Solve for x
    x = 660,562.56/379.25
  6. Step 6: Final answer
    x = 1,741.76

Related Problems

Find third proportional to 189.63 and 406.38
Half scale
Find third proportional to 758.50 and 1,625.50
Double scale
Find third proportional to 381 and 817
Similar ratio
Find third proportional to 568.88 and 1,219.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.