Home / 801-1,240.50

Finding the Third Proportional to 801 and 1,240.50

Calculator

Solution

The third proportional to 801 and 1,240.50 is: 1,921.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    801 : 1,240.50 = 1,240.50 : x
  2. Step 2: Convert to fraction form
    801/1,240.50 = 1,240.50/x
  3. Step 3: Cross multiply
    801x = 1,240.50 × 1,240.50
  4. Step 4: Simplify right side
    801x = 1,538,840.25
  5. Step 5: Solve for x
    x = 1,538,840.25/801
  6. Step 6: Final answer
    x = 1,921.15

Related Problems

Find third proportional to 400.50 and 620.25
Half scale
Find third proportional to 1,602 and 2,481
Double scale
Find third proportional to 803 and 1,244
Similar ratio
Find third proportional to 1,201.50 and 1,860.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.