Home / 909.75-939

Finding the Third Proportional to 909.75 and 939

Calculator

Solution

The third proportional to 909.75 and 939 is: 969.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    909.75 : 939 = 939 : x
  2. Step 2: Convert to fraction form
    909.75/939 = 939/x
  3. Step 3: Cross multiply
    909.75x = 939 × 939
  4. Step 4: Simplify right side
    909.75x = 881,721
  5. Step 5: Solve for x
    x = 881,721/909.75
  6. Step 6: Final answer
    x = 969.19

Related Problems

Find third proportional to 454.88 and 469.50
Half scale
Find third proportional to 1,819.50 and 1,878
Double scale
Find third proportional to 912 and 941
Similar ratio
Find third proportional to 1,364.63 and 1,408.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.