Home / 3,183.25-4,392.90-1,786

Finding the Fourth Proportional to 3,183.25, 4,392.90 and 1,786

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Solution

The fourth proportional to 3,183.25, 4,392.90 and 1,786 is: 2,464.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,183.25 : 4,392.90 = 1,786 : x
  2. Step 2: Convert to fraction form
    3,183.25/4,392.90 = 1,786/x
  3. Step 3: Cross multiply
    3,183.25x = 4,392.90 × 1,786
  4. Step 4: Simplify right side
    3,183.25x = 7,845,719.40
  5. Step 5: Solve for x
    x = 7,845,719.40/3,183.25
  6. Step 6: Final answer
    x = 2,464.69

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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.