Home / 920.25-1,311.75

Finding the Third Proportional to 920.25 and 1,311.75

Calculator

Solution

The third proportional to 920.25 and 1,311.75 is: 1,869.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.25 : 1,311.75 = 1,311.75 : x
  2. Step 2: Convert to fraction form
    920.25/1,311.75 = 1,311.75/x
  3. Step 3: Cross multiply
    920.25x = 1,311.75 × 1,311.75
  4. Step 4: Simplify right side
    920.25x = 1,720,688.06
  5. Step 5: Solve for x
    x = 1,720,688.06/920.25
  6. Step 6: Final answer
    x = 1,869.81

Related Problems

Find third proportional to 460.13 and 655.88
Half scale
Find third proportional to 1,840.50 and 2,623.50
Double scale
Find third proportional to 922 and 1,315
Similar ratio
Find third proportional to 1,380.38 and 1,967.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.