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Finding the Fourth Proportional to 5,919.78, 8,169.02 and 3,400.12

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Solution

The fourth proportional to 5,919.78, 8,169.02 and 3,400.12 is: 4,692.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,919.78 : 8,169.02 = 3,400.12 : x
  2. Step 2: Convert to fraction form
    5,919.78/8,169.02 = 3,400.12/x
  3. Step 3: Cross multiply
    5,919.78x = 8,169.02 × 3,400.12
  4. Step 4: Simplify right side
    5,919.78x = 27,775,648.28
  5. Step 5: Solve for x
    x = 27,775,648.28/5,919.78
  6. Step 6: Final answer
    x = 4,692.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.