Home / 4,380-9,615

Finding the Third Proportional to 4,380 and 9,615

Calculator

Solution

The third proportional to 4,380 and 9,615 is: 21,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,380 : 9,615 = 9,615 : x
  2. Step 2: Convert to fraction form
    4,380/9,615 = 9,615/x
  3. Step 3: Cross multiply
    4,380x = 9,615 × 9,615
  4. Step 4: Simplify right side
    4,380x = 92,448,225
  5. Step 5: Solve for x
    x = 92,448,225/4,380
  6. Step 6: Final answer
    x = 21,106.90

Related Problems

Find third proportional to 2,190 and 4,807.50
Half scale
Find third proportional to 8,760 and 19,230
Double scale
Find third proportional to 4,382 and 9,619
Similar ratio
Find third proportional to 6,570 and 14,422.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.