Home / 5,385.39-8,080.66-2,788.32

Finding the Fourth Proportional to 5,385.39, 8,080.66 and 2,788.32

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Solution

The fourth proportional to 5,385.39, 8,080.66 and 2,788.32 is: 4,183.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.39 : 8,080.66 = 2,788.32 : x
  2. Step 2: Convert to fraction form
    5,385.39/8,080.66 = 2,788.32/x
  3. Step 3: Cross multiply
    5,385.39x = 8,080.66 × 2,788.32
  4. Step 4: Simplify right side
    5,385.39x = 22,531,499.68
  5. Step 5: Solve for x
    x = 22,531,499.68/5,385.39
  6. Step 6: Final answer
    x = 4,183.82

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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.