Home / 7,740-11,121.75

Finding the Third Proportional to 7,740 and 11,121.75

Calculator

Solution

The third proportional to 7,740 and 11,121.75 is: 15,981.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,740 : 11,121.75 = 11,121.75 : x
  2. Step 2: Convert to fraction form
    7,740/11,121.75 = 11,121.75/x
  3. Step 3: Cross multiply
    7,740x = 11,121.75 × 11,121.75
  4. Step 4: Simplify right side
    7,740x = 123,693,323.06
  5. Step 5: Solve for x
    x = 123,693,323.06/7,740
  6. Step 6: Final answer
    x = 15,981.05

Related Problems

Find third proportional to 3,870 and 5,560.88
Half scale
Find third proportional to 15,480 and 22,243.50
Double scale
Find third proportional to 7,742 and 11,125
Similar ratio
Find third proportional to 11,610 and 16,682.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.