Home / 7,800-11,700-2,328

Finding the Fourth Proportional to 7,800, 11,700 and 2,328

Calculator

Solution

The fourth proportional to 7,800, 11,700 and 2,328 is: 3,492

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,800 : 11,700 = 2,328 : x
  2. Step 2: Convert to fraction form
    7,800/11,700 = 2,328/x
  3. Step 3: Cross multiply
    7,800x = 11,700 × 2,328
  4. Step 4: Simplify right side
    7,800x = 27,237,600
  5. Step 5: Solve for x
    x = 27,237,600/7,800
  6. Step 6: Final answer
    x = 3,492

Related Problems

Find fourth proportional to 3,900, 5,850 and 1,164
Half scale
Find fourth proportional to 15,600, 23,400 and 4,656
Double scale
Find fourth proportional to 7,801, 11,701.50 and 2,329
Similar ratio
Find fourth proportional to 11,700, 17,550 and 3,492
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.