Home / 7,938-8,991

Finding the Third Proportional to 7,938 and 8,991

Calculator

Solution

The third proportional to 7,938 and 8,991 is: 10,183.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938 : 8,991 = 8,991 : x
  2. Step 2: Convert to fraction form
    7,938/8,991 = 8,991/x
  3. Step 3: Cross multiply
    7,938x = 8,991 × 8,991
  4. Step 4: Simplify right side
    7,938x = 80,838,081
  5. Step 5: Solve for x
    x = 80,838,081/7,938
  6. Step 6: Final answer
    x = 10,183.68

Related Problems

Find third proportional to 3,969 and 4,495.50
Half scale
Find third proportional to 15,876 and 17,982
Double scale
Find third proportional to 7,940 and 8,993
Similar ratio
Find third proportional to 11,907 and 13,486.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.