Home / 3,783.92-5,221.84-2,212.80

Finding the Fourth Proportional to 3,783.92, 5,221.84 and 2,212.80

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Solution

The fourth proportional to 3,783.92, 5,221.84 and 2,212.80 is: 3,053.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.92 : 5,221.84 = 2,212.80 : x
  2. Step 2: Convert to fraction form
    3,783.92/5,221.84 = 2,212.80/x
  3. Step 3: Cross multiply
    3,783.92x = 5,221.84 × 2,212.80
  4. Step 4: Simplify right side
    3,783.92x = 11,554,887.55
  5. Step 5: Solve for x
    x = 11,554,887.55/3,783.92
  6. Step 6: Final answer
    x = 3,053.68

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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.