Home / 1,768-2,652-613.76

Finding the Fourth Proportional to 1,768, 2,652 and 613.76

Calculator

Solution

The fourth proportional to 1,768, 2,652 and 613.76 is: 920.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768 : 2,652 = 613.76 : x
  2. Step 2: Convert to fraction form
    1,768/2,652 = 613.76/x
  3. Step 3: Cross multiply
    1,768x = 2,652 × 613.76
  4. Step 4: Simplify right side
    1,768x = 1,627,691.52
  5. Step 5: Solve for x
    x = 1,627,691.52/1,768
  6. Step 6: Final answer
    x = 920.64

Related Problems

Find fourth proportional to 884, 1,326 and 306.88
Half scale
Find fourth proportional to 3,536, 5,304 and 1,227.52
Double scale
Find fourth proportional to 1,769, 2,653.50 and 614.76
Similar ratio
Find fourth proportional to 2,652, 3,978 and 920.64
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.