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Finding the Fourth Proportional to 3,878.32, 5,814.22 and 1,799.80

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Solution

The fourth proportional to 3,878.32, 5,814.22 and 1,799.80 is: 2,698.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.32 : 5,814.22 = 1,799.80 : x
  2. Step 2: Convert to fraction form
    3,878.32/5,814.22 = 1,799.80/x
  3. Step 3: Cross multiply
    3,878.32x = 5,814.22 × 1,799.80
  4. Step 4: Simplify right side
    3,878.32x = 10,464,433.16
  5. Step 5: Solve for x
    x = 10,464,433.16/3,878.32
  6. Step 6: Final answer
    x = 2,698.19

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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.