Home / 2,786.64-3,845.96-1,608.40

Finding the Fourth Proportional to 2,786.64, 3,845.96 and 1,608.40

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Solution

The fourth proportional to 2,786.64, 3,845.96 and 1,608.40 is: 2,219.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.64 : 3,845.96 = 1,608.40 : x
  2. Step 2: Convert to fraction form
    2,786.64/3,845.96 = 1,608.40/x
  3. Step 3: Cross multiply
    2,786.64x = 3,845.96 × 1,608.40
  4. Step 4: Simplify right side
    2,786.64x = 6,185,842.06
  5. Step 5: Solve for x
    x = 6,185,842.06/2,786.64
  6. Step 6: Final answer
    x = 2,219.82

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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.