Home / 3,421.38-5,129.46-1,341.09

Finding the Fourth Proportional to 3,421.38, 5,129.46 and 1,341.09

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Solution

The fourth proportional to 3,421.38, 5,129.46 and 1,341.09 is: 2,010.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.38 : 5,129.46 = 1,341.09 : x
  2. Step 2: Convert to fraction form
    3,421.38/5,129.46 = 1,341.09/x
  3. Step 3: Cross multiply
    3,421.38x = 5,129.46 × 1,341.09
  4. Step 4: Simplify right side
    3,421.38x = 6,879,067.51
  5. Step 5: Solve for x
    x = 6,879,067.51/3,421.38
  6. Step 6: Final answer
    x = 2,010.61

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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.