Home / 7,932-11,898-3,315

Finding the Fourth Proportional to 7,932, 11,898 and 3,315

Calculator

Solution

The fourth proportional to 7,932, 11,898 and 3,315 is: 4,972.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,932 : 11,898 = 3,315 : x
  2. Step 2: Convert to fraction form
    7,932/11,898 = 3,315/x
  3. Step 3: Cross multiply
    7,932x = 11,898 × 3,315
  4. Step 4: Simplify right side
    7,932x = 39,441,870
  5. Step 5: Solve for x
    x = 39,441,870/7,932
  6. Step 6: Final answer
    x = 4,972.50

Related Problems

Find fourth proportional to 3,966, 5,949 and 1,657.50
Half scale
Find fourth proportional to 15,864, 23,796 and 6,630
Double scale
Find fourth proportional to 7,933, 11,899.50 and 3,316
Similar ratio
Find fourth proportional to 11,898, 17,847 and 4,972.50
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.