Home / 3,777.21-5,212.87-2,098.78

Finding the Fourth Proportional to 3,777.21, 5,212.87 and 2,098.78

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Solution

The fourth proportional to 3,777.21, 5,212.87 and 2,098.78 is: 2,896.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,777.21 : 5,212.87 = 2,098.78 : x
  2. Step 2: Convert to fraction form
    3,777.21/5,212.87 = 2,098.78/x
  3. Step 3: Cross multiply
    3,777.21x = 5,212.87 × 2,098.78
  4. Step 4: Simplify right side
    3,777.21x = 10,940,649.02
  5. Step 5: Solve for x
    x = 10,940,649.02/3,777.21
  6. Step 6: Final answer
    x = 2,896.49

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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.