Home / 3,462.21-5,189.76-1,379.40

Finding the Fourth Proportional to 3,462.21, 5,189.76 and 1,379.40

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Solution

The fourth proportional to 3,462.21, 5,189.76 and 1,379.40 is: 2,067.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,462.21 : 5,189.76 = 1,379.40 : x
  2. Step 2: Convert to fraction form
    3,462.21/5,189.76 = 1,379.40/x
  3. Step 3: Cross multiply
    3,462.21x = 5,189.76 × 1,379.40
  4. Step 4: Simplify right side
    3,462.21x = 7,158,754.94
  5. Step 5: Solve for x
    x = 7,158,754.94/3,462.21
  6. Step 6: Final answer
    x = 2,067.68

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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.