Home / 5,170-7,930

Finding the Third Proportional to 5,170 and 7,930

Calculator

Solution

The third proportional to 5,170 and 7,930 is: 12,163.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170 : 7,930 = 7,930 : x
  2. Step 2: Convert to fraction form
    5,170/7,930 = 7,930/x
  3. Step 3: Cross multiply
    5,170x = 7,930 × 7,930
  4. Step 4: Simplify right side
    5,170x = 62,884,900
  5. Step 5: Solve for x
    x = 62,884,900/5,170
  6. Step 6: Final answer
    x = 12,163.42

Related Problems

Find third proportional to 2,585 and 3,965
Half scale
Find third proportional to 10,340 and 15,860
Double scale
Find third proportional to 5,172 and 7,933
Similar ratio
Find third proportional to 7,755 and 11,895
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.