Home / 1,306.26-1,959.36-381.78

Finding the Fourth Proportional to 1,306.26, 1,959.36 and 381.78

Calculator

Solution

The fourth proportional to 1,306.26, 1,959.36 and 381.78 is: 572.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.26 : 1,959.36 = 381.78 : x
  2. Step 2: Convert to fraction form
    1,306.26/1,959.36 = 381.78/x
  3. Step 3: Cross multiply
    1,306.26x = 1,959.36 × 381.78
  4. Step 4: Simplify right side
    1,306.26x = 748,044.46
  5. Step 5: Solve for x
    x = 748,044.46/1,306.26
  6. Step 6: Final answer
    x = 572.66

Related Problems

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.