Home / 1,211-1,872.50

Finding the Third Proportional to 1,211 and 1,872.50

Calculator

Solution

The third proportional to 1,211 and 1,872.50 is: 2,895.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211 : 1,872.50 = 1,872.50 : x
  2. Step 2: Convert to fraction form
    1,211/1,872.50 = 1,872.50/x
  3. Step 3: Cross multiply
    1,211x = 1,872.50 × 1,872.50
  4. Step 4: Simplify right side
    1,211x = 3,506,256.25
  5. Step 5: Solve for x
    x = 3,506,256.25/1,211
  6. Step 6: Final answer
    x = 2,895.34

Related Problems

Find third proportional to 605.50 and 936.25
Half scale
Find third proportional to 2,422 and 3,745
Double scale
Find third proportional to 1,213 and 1,876
Similar ratio
Find third proportional to 1,816.50 and 2,808.75
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.