Home / 5,190-7,881

Finding the Third Proportional to 5,190 and 7,881

Calculator

Solution

The third proportional to 5,190 and 7,881 is: 11,967.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190 : 7,881 = 7,881 : x
  2. Step 2: Convert to fraction form
    5,190/7,881 = 7,881/x
  3. Step 3: Cross multiply
    5,190x = 7,881 × 7,881
  4. Step 4: Simplify right side
    5,190x = 62,110,161
  5. Step 5: Solve for x
    x = 62,110,161/5,190
  6. Step 6: Final answer
    x = 11,967.28

Related Problems

Find third proportional to 2,595 and 3,940.50
Half scale
Find third proportional to 10,380 and 15,762
Double scale
Find third proportional to 5,192 and 7,884
Similar ratio
Find third proportional to 7,785 and 11,821.50
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.