Home / 3,780.57-5,216.55-2,187.37

Finding the Fourth Proportional to 3,780.57, 5,216.55 and 2,187.37

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Solution

The fourth proportional to 3,780.57, 5,216.55 and 2,187.37 is: 3,018.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.57 : 5,216.55 = 2,187.37 : x
  2. Step 2: Convert to fraction form
    3,780.57/5,216.55 = 2,187.37/x
  3. Step 3: Cross multiply
    3,780.57x = 5,216.55 × 2,187.37
  4. Step 4: Simplify right side
    3,780.57x = 11,410,524.97
  5. Step 5: Solve for x
    x = 11,410,524.97/3,780.57
  6. Step 6: Final answer
    x = 3,018.20

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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.