Home / 1,519.24-2,101.80-1,256.80

Finding the Fourth Proportional to 1,519.24, 2,101.80 and 1,256.80

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Solution

The fourth proportional to 1,519.24, 2,101.80 and 1,256.80 is: 1,738.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.24 : 2,101.80 = 1,256.80 : x
  2. Step 2: Convert to fraction form
    1,519.24/2,101.80 = 1,256.80/x
  3. Step 3: Cross multiply
    1,519.24x = 2,101.80 × 1,256.80
  4. Step 4: Simplify right side
    1,519.24x = 2,641,542.24
  5. Step 5: Solve for x
    x = 2,641,542.24/1,519.24
  6. Step 6: Final answer
    x = 1,738.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.