Home / 1,107.39-1,661.07-337.89

Finding the Fourth Proportional to 1,107.39, 1,661.07 and 337.89

Calculator

Solution

The fourth proportional to 1,107.39, 1,661.07 and 337.89 is: 506.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107.39 : 1,661.07 = 337.89 : x
  2. Step 2: Convert to fraction form
    1,107.39/1,661.07 = 337.89/x
  3. Step 3: Cross multiply
    1,107.39x = 1,661.07 × 337.89
  4. Step 4: Simplify right side
    1,107.39x = 561,258.94
  5. Step 5: Solve for x
    x = 561,258.94/1,107.39
  6. Step 6: Final answer
    x = 506.83

Related Problems

Find fourth proportional to 553.70, 830.54 and 168.95
Half scale
Find fourth proportional to 2,214.78, 3,322.14 and 675.78
Double scale
Find fourth proportional to 1,108.39, 1,662.57 and 338.89
Similar ratio
Find fourth proportional to 1,661.09, 2,491.61 and 506.84
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.