Home / 7,819-12,285

Finding the Third Proportional to 7,819 and 12,285

Calculator

Solution

The third proportional to 7,819 and 12,285 is: 19,301.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819 : 12,285 = 12,285 : x
  2. Step 2: Convert to fraction form
    7,819/12,285 = 12,285/x
  3. Step 3: Cross multiply
    7,819x = 12,285 × 12,285
  4. Step 4: Simplify right side
    7,819x = 150,921,225
  5. Step 5: Solve for x
    x = 150,921,225/7,819
  6. Step 6: Final answer
    x = 19,301.86

Related Problems

Find third proportional to 3,909.50 and 6,142.50
Half scale
Find third proportional to 15,638 and 24,570
Double scale
Find third proportional to 7,821 and 12,288
Similar ratio
Find third proportional to 11,728.50 and 18,427.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.