Home / 1,311-1,967.22-627

Finding the Fourth Proportional to 1,311, 1,967.22 and 627

Calculator

Solution

The fourth proportional to 1,311, 1,967.22 and 627 is: 940.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311 : 1,967.22 = 627 : x
  2. Step 2: Convert to fraction form
    1,311/1,967.22 = 627/x
  3. Step 3: Cross multiply
    1,311x = 1,967.22 × 627
  4. Step 4: Simplify right side
    1,311x = 1,233,446.94
  5. Step 5: Solve for x
    x = 1,233,446.94/1,311
  6. Step 6: Final answer
    x = 940.84

Related Problems

Find fourth proportional to 655.50, 983.61 and 313.50
Half scale
Find fourth proportional to 2,622, 3,934.44 and 1,254
Double scale
Find fourth proportional to 1,312, 1,968.72 and 628
Similar ratio
Find fourth proportional to 1,966.50, 2,950.83 and 940.50
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.