Home / 801.75-1,215

Finding the Third Proportional to 801.75 and 1,215

Calculator

Solution

The third proportional to 801.75 and 1,215 is: 1,841.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.75 : 1,215 = 1,215 : x
  2. Step 2: Convert to fraction form
    801.75/1,215 = 1,215/x
  3. Step 3: Cross multiply
    801.75x = 1,215 × 1,215
  4. Step 4: Simplify right side
    801.75x = 1,476,225
  5. Step 5: Solve for x
    x = 1,476,225/801.75
  6. Step 6: Final answer
    x = 1,841.25

Related Problems

Find third proportional to 400.88 and 607.50
Half scale
Find third proportional to 1,603.50 and 2,430
Double scale
Find third proportional to 804 and 1,218
Similar ratio
Find third proportional to 1,202.63 and 1,822.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.