Home / 3,919.06-5,879.51-1,145.78

Finding the Fourth Proportional to 3,919.06, 5,879.51 and 1,145.78

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Solution

The fourth proportional to 3,919.06, 5,879.51 and 1,145.78 is: 1,718.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.06 : 5,879.51 = 1,145.78 : x
  2. Step 2: Convert to fraction form
    3,919.06/5,879.51 = 1,145.78/x
  3. Step 3: Cross multiply
    3,919.06x = 5,879.51 × 1,145.78
  4. Step 4: Simplify right side
    3,919.06x = 6,736,616.19
  5. Step 5: Solve for x
    x = 6,736,616.19/3,919.06
  6. Step 6: Final answer
    x = 1,718.94

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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.