Home / 1,221.52-1,832.28-452

Finding the Fourth Proportional to 1,221.52, 1,832.28 and 452

Calculator

Solution

The fourth proportional to 1,221.52, 1,832.28 and 452 is: 678

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221.52 : 1,832.28 = 452 : x
  2. Step 2: Convert to fraction form
    1,221.52/1,832.28 = 452/x
  3. Step 3: Cross multiply
    1,221.52x = 1,832.28 × 452
  4. Step 4: Simplify right side
    1,221.52x = 828,190.56
  5. Step 5: Solve for x
    x = 828,190.56/1,221.52
  6. Step 6: Final answer
    x = 678

Related Problems

Find fourth proportional to 610.76, 916.14 and 226
Half scale
Find fourth proportional to 2,443.04, 3,664.56 and 904
Double scale
Find fourth proportional to 1,222.52, 1,833.78 and 453
Similar ratio
Find fourth proportional to 1,832.28, 2,748.42 and 678
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.