Home / 3,783.60-5,221.66-2,190.77

Finding the Fourth Proportional to 3,783.60, 5,221.66 and 2,190.77

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Solution

The fourth proportional to 3,783.60, 5,221.66 and 2,190.77 is: 3,023.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.60 : 5,221.66 = 2,190.77 : x
  2. Step 2: Convert to fraction form
    3,783.60/5,221.66 = 2,190.77/x
  3. Step 3: Cross multiply
    3,783.60x = 5,221.66 × 2,190.77
  4. Step 4: Simplify right side
    3,783.60x = 11,439,456.08
  5. Step 5: Solve for x
    x = 11,439,456.08/3,783.60
  6. Step 6: Final answer
    x = 3,023.43

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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.