Home / 7,688-10,880

Finding the Third Proportional to 7,688 and 10,880

Calculator

Solution

The third proportional to 7,688 and 10,880 is: 15,397.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,688 : 10,880 = 10,880 : x
  2. Step 2: Convert to fraction form
    7,688/10,880 = 10,880/x
  3. Step 3: Cross multiply
    7,688x = 10,880 × 10,880
  4. Step 4: Simplify right side
    7,688x = 118,374,400
  5. Step 5: Solve for x
    x = 118,374,400/7,688
  6. Step 6: Final answer
    x = 15,397.29

Related Problems

Find third proportional to 3,844 and 5,440
Half scale
Find third proportional to 15,376 and 21,760
Double scale
Find third proportional to 7,690 and 10,883
Similar ratio
Find third proportional to 11,532 and 16,320
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.