Home / 7,760-18,440

Finding the Third Proportional to 7,760 and 18,440

Calculator

Solution

The third proportional to 7,760 and 18,440 is: 43,818.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,760 : 18,440 = 18,440 : x
  2. Step 2: Convert to fraction form
    7,760/18,440 = 18,440/x
  3. Step 3: Cross multiply
    7,760x = 18,440 × 18,440
  4. Step 4: Simplify right side
    7,760x = 340,033,600
  5. Step 5: Solve for x
    x = 340,033,600/7,760
  6. Step 6: Final answer
    x = 43,818.76

Related Problems

Find third proportional to 3,880 and 9,220
Half scale
Find third proportional to 15,520 and 36,880
Double scale
Find third proportional to 7,762 and 18,445
Similar ratio
Find third proportional to 11,640 and 27,660
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.