Home / 3,865.78-5,799.48-1,919.08

Finding the Fourth Proportional to 3,865.78, 5,799.48 and 1,919.08

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Solution

The fourth proportional to 3,865.78, 5,799.48 and 1,919.08 is: 2,879.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.78 : 5,799.48 = 1,919.08 : x
  2. Step 2: Convert to fraction form
    3,865.78/5,799.48 = 1,919.08/x
  3. Step 3: Cross multiply
    3,865.78x = 5,799.48 × 1,919.08
  4. Step 4: Simplify right side
    3,865.78x = 11,129,666.08
  5. Step 5: Solve for x
    x = 11,129,666.08/3,865.78
  6. Step 6: Final answer
    x = 2,879.02

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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.