Home / 4,288-8,640

Finding the Third Proportional to 4,288 and 8,640

Calculator

Solution

The third proportional to 4,288 and 8,640 is: 17,408.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,288 : 8,640 = 8,640 : x
  2. Step 2: Convert to fraction form
    4,288/8,640 = 8,640/x
  3. Step 3: Cross multiply
    4,288x = 8,640 × 8,640
  4. Step 4: Simplify right side
    4,288x = 74,649,600
  5. Step 5: Solve for x
    x = 74,649,600/4,288
  6. Step 6: Final answer
    x = 17,408.96

Related Problems

Find third proportional to 2,144 and 4,320
Half scale
Find third proportional to 8,576 and 17,280
Double scale
Find third proportional to 4,290 and 8,644
Similar ratio
Find third proportional to 6,432 and 12,960
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.01) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.