Home / 6,490-12,656

Finding the Third Proportional to 6,490 and 12,656

Calculator

Solution

The third proportional to 6,490 and 12,656 is: 24,680.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,490 : 12,656 = 12,656 : x
  2. Step 2: Convert to fraction form
    6,490/12,656 = 12,656/x
  3. Step 3: Cross multiply
    6,490x = 12,656 × 12,656
  4. Step 4: Simplify right side
    6,490x = 160,174,336
  5. Step 5: Solve for x
    x = 160,174,336/6,490
  6. Step 6: Final answer
    x = 24,680.18

Related Problems

Find third proportional to 3,245 and 6,328
Half scale
Find third proportional to 12,980 and 25,312
Double scale
Find third proportional to 6,492 and 12,660
Similar ratio
Find third proportional to 9,735 and 18,984
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.