Home / 3,514.42-5,279.14-2,128.40

Finding the Fourth Proportional to 3,514.42, 5,279.14 and 2,128.40

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Solution

The fourth proportional to 3,514.42, 5,279.14 and 2,128.40 is: 3,197.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,514.42 : 5,279.14 = 2,128.40 : x
  2. Step 2: Convert to fraction form
    3,514.42/5,279.14 = 2,128.40/x
  3. Step 3: Cross multiply
    3,514.42x = 5,279.14 × 2,128.40
  4. Step 4: Simplify right side
    3,514.42x = 11,236,121.58
  5. Step 5: Solve for x
    x = 11,236,121.58/3,514.42
  6. Step 6: Final answer
    x = 3,197.15

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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.