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Finding the Fourth Proportional to 3,777.77, 5,212.76 and 2,099.21

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Solution

The fourth proportional to 3,777.77, 5,212.76 and 2,099.21 is: 2,896.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,777.77 : 5,212.76 = 2,099.21 : x
  2. Step 2: Convert to fraction form
    3,777.77/5,212.76 = 2,099.21/x
  3. Step 3: Cross multiply
    3,777.77x = 5,212.76 × 2,099.21
  4. Step 4: Simplify right side
    3,777.77x = 10,942,641.36
  5. Step 5: Solve for x
    x = 10,942,641.36/3,777.77
  6. Step 6: Final answer
    x = 2,896.59

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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.