Home / 3,919.05-5,878.26-1,145.75

Finding the Fourth Proportional to 3,919.05, 5,878.26 and 1,145.75

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Solution

The fourth proportional to 3,919.05, 5,878.26 and 1,145.75 is: 1,718.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.05 : 5,878.26 = 1,145.75 : x
  2. Step 2: Convert to fraction form
    3,919.05/5,878.26 = 1,145.75/x
  3. Step 3: Cross multiply
    3,919.05x = 5,878.26 × 1,145.75
  4. Step 4: Simplify right side
    3,919.05x = 6,734,987.00
  5. Step 5: Solve for x
    x = 6,734,987.00/3,919.05
  6. Step 6: Final answer
    x = 1,718.53

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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.