Home / 3,617-5,425.50-881

Finding the Fourth Proportional to 3,617, 5,425.50 and 881

Calculator

Solution

The fourth proportional to 3,617, 5,425.50 and 881 is: 1,321.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617 : 5,425.50 = 881 : x
  2. Step 2: Convert to fraction form
    3,617/5,425.50 = 881/x
  3. Step 3: Cross multiply
    3,617x = 5,425.50 × 881
  4. Step 4: Simplify right side
    3,617x = 4,779,865.50
  5. Step 5: Solve for x
    x = 4,779,865.50/3,617
  6. Step 6: Final answer
    x = 1,321.50

Related Problems

Find fourth proportional to 1,808.50, 2,712.75 and 440.50
Half scale
Find fourth proportional to 7,234, 10,851 and 1,762
Double scale
Find fourth proportional to 3,618, 5,427 and 882
Similar ratio
Find fourth proportional to 5,425.50, 8,138.25 and 1,321.50
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.