Home / 3,619.78-4,997.54-2,778.87

Finding the Fourth Proportional to 3,619.78, 4,997.54 and 2,778.87

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Solution

The fourth proportional to 3,619.78, 4,997.54 and 2,778.87 is: 3,836.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.78 : 4,997.54 = 2,778.87 : x
  2. Step 2: Convert to fraction form
    3,619.78/4,997.54 = 2,778.87/x
  3. Step 3: Cross multiply
    3,619.78x = 4,997.54 × 2,778.87
  4. Step 4: Simplify right side
    3,619.78x = 13,887,500.09
  5. Step 5: Solve for x
    x = 13,887,500.09/3,619.78
  6. Step 6: Final answer
    x = 3,836.56

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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.