Home / 7,220-8,360

Finding the Third Proportional to 7,220 and 8,360

Calculator

Solution

The third proportional to 7,220 and 8,360 is: 9,680

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220 : 8,360 = 8,360 : x
  2. Step 2: Convert to fraction form
    7,220/8,360 = 8,360/x
  3. Step 3: Cross multiply
    7,220x = 8,360 × 8,360
  4. Step 4: Simplify right side
    7,220x = 69,889,600
  5. Step 5: Solve for x
    x = 69,889,600/7,220
  6. Step 6: Final answer
    x = 9,680

Related Problems

Find third proportional to 3,610 and 4,180
Half scale
Find third proportional to 14,440 and 16,720
Double scale
Find third proportional to 7,222 and 8,362
Similar ratio
Find third proportional to 10,830 and 12,540
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.