Home / 3,919.21-5,879.57-1,145.89

Finding the Fourth Proportional to 3,919.21, 5,879.57 and 1,145.89

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Solution

The fourth proportional to 3,919.21, 5,879.57 and 1,145.89 is: 1,719.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.21 : 5,879.57 = 1,145.89 : x
  2. Step 2: Convert to fraction form
    3,919.21/5,879.57 = 1,145.89/x
  3. Step 3: Cross multiply
    3,919.21x = 5,879.57 × 1,145.89
  4. Step 4: Simplify right side
    3,919.21x = 6,737,334.74
  5. Step 5: Solve for x
    x = 6,737,334.74/3,919.21
  6. Step 6: Final answer
    x = 1,719.06

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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.