Home / 7,812-11,718-2,340

Finding the Fourth Proportional to 7,812, 11,718 and 2,340

Calculator

Solution

The fourth proportional to 7,812, 11,718 and 2,340 is: 3,510

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812 : 11,718 = 2,340 : x
  2. Step 2: Convert to fraction form
    7,812/11,718 = 2,340/x
  3. Step 3: Cross multiply
    7,812x = 11,718 × 2,340
  4. Step 4: Simplify right side
    7,812x = 27,420,120
  5. Step 5: Solve for x
    x = 27,420,120/7,812
  6. Step 6: Final answer
    x = 3,510

Related Problems

Find fourth proportional to 3,906, 5,859 and 1,170
Half scale
Find fourth proportional to 15,624, 23,436 and 4,680
Double scale
Find fourth proportional to 7,813, 11,719.50 and 2,341
Similar ratio
Find fourth proportional to 11,718, 17,577 and 3,510
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.