Home / 2,786.56-3,845.31-1,607.56

Finding the Fourth Proportional to 2,786.56, 3,845.31 and 1,607.56

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Solution

The fourth proportional to 2,786.56, 3,845.31 and 1,607.56 is: 2,218.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.56 : 3,845.31 = 1,607.56 : x
  2. Step 2: Convert to fraction form
    2,786.56/3,845.31 = 1,607.56/x
  3. Step 3: Cross multiply
    2,786.56x = 3,845.31 × 1,607.56
  4. Step 4: Simplify right side
    2,786.56x = 6,181,566.54
  5. Step 5: Solve for x
    x = 6,181,566.54/2,786.56
  6. Step 6: Final answer
    x = 2,218.35

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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.