Home / 3,021.81-4,170.15-1,960.01

Finding the Fourth Proportional to 3,021.81, 4,170.15 and 1,960.01

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Solution

The fourth proportional to 3,021.81, 4,170.15 and 1,960.01 is: 2,704.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.81 : 4,170.15 = 1,960.01 : x
  2. Step 2: Convert to fraction form
    3,021.81/4,170.15 = 1,960.01/x
  3. Step 3: Cross multiply
    3,021.81x = 4,170.15 × 1,960.01
  4. Step 4: Simplify right side
    3,021.81x = 8,173,514.85
  5. Step 5: Solve for x
    x = 8,173,514.85/3,021.81
  6. Step 6: Final answer
    x = 2,704.84

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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.