Home / 3,780-8,190

Finding the Third Proportional to 3,780 and 8,190

Calculator

Solution

The third proportional to 3,780 and 8,190 is: 17,745

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780 : 8,190 = 8,190 : x
  2. Step 2: Convert to fraction form
    3,780/8,190 = 8,190/x
  3. Step 3: Cross multiply
    3,780x = 8,190 × 8,190
  4. Step 4: Simplify right side
    3,780x = 67,076,100
  5. Step 5: Solve for x
    x = 67,076,100/3,780
  6. Step 6: Final answer
    x = 17,745

Related Problems

Find third proportional to 1,890 and 4,095
Half scale
Find third proportional to 7,560 and 16,380
Double scale
Find third proportional to 3,782 and 8,194
Similar ratio
Find third proportional to 5,670 and 12,285
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.