Home / 7,870-12,246

Finding the Third Proportional to 7,870 and 12,246

Calculator

Solution

The third proportional to 7,870 and 12,246 is: 19,055.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,870 : 12,246 = 12,246 : x
  2. Step 2: Convert to fraction form
    7,870/12,246 = 12,246/x
  3. Step 3: Cross multiply
    7,870x = 12,246 × 12,246
  4. Step 4: Simplify right side
    7,870x = 149,964,516
  5. Step 5: Solve for x
    x = 149,964,516/7,870
  6. Step 6: Final answer
    x = 19,055.21

Related Problems

Find third proportional to 3,935 and 6,123
Half scale
Find third proportional to 15,740 and 24,492
Double scale
Find third proportional to 7,872 and 12,249
Similar ratio
Find third proportional to 11,805 and 18,369
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.