Home / 1,768.56-2,640-1,539.12

Finding the Fourth Proportional to 1,768.56, 2,640 and 1,539.12

Calculator

Solution

The fourth proportional to 1,768.56, 2,640 and 1,539.12 is: 2,297.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.56 : 2,640 = 1,539.12 : x
  2. Step 2: Convert to fraction form
    1,768.56/2,640 = 1,539.12/x
  3. Step 3: Cross multiply
    1,768.56x = 2,640 × 1,539.12
  4. Step 4: Simplify right side
    1,768.56x = 4,063,276.80
  5. Step 5: Solve for x
    x = 4,063,276.80/1,768.56
  6. Step 6: Final answer
    x = 2,297.51

Related Problems

Find fourth proportional to 884.28, 1,320 and 769.56
Half scale
Find fourth proportional to 3,537.12, 5,280 and 3,078.24
Double scale
Find fourth proportional to 1,769.56, 2,641.49 and 1,540.12
Similar ratio
Find fourth proportional to 2,652.84, 3,960 and 2,308.68
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.