Home / 1,171.20-1,755.60-882

Finding the Fourth Proportional to 1,171.20, 1,755.60 and 882

Calculator

Solution

The fourth proportional to 1,171.20, 1,755.60 and 882 is: 1,322.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171.20 : 1,755.60 = 882 : x
  2. Step 2: Convert to fraction form
    1,171.20/1,755.60 = 882/x
  3. Step 3: Cross multiply
    1,171.20x = 1,755.60 × 882
  4. Step 4: Simplify right side
    1,171.20x = 1,548,439.20
  5. Step 5: Solve for x
    x = 1,548,439.20/1,171.20
  6. Step 6: Final answer
    x = 1,322.10

Related Problems

Find fourth proportional to 585.60, 877.80 and 441
Half scale
Find fourth proportional to 2,342.40, 3,511.20 and 1,764
Double scale
Find fourth proportional to 1,172.20, 1,757.10 and 883
Similar ratio
Find fourth proportional to 1,756.80, 2,633.40 and 1,323
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.