Home / 3,866.37-5,335.57-2,187.61

Finding the Fourth Proportional to 3,866.37, 5,335.57 and 2,187.61

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Solution

The fourth proportional to 3,866.37, 5,335.57 and 2,187.61 is: 3,018.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.37 : 5,335.57 = 2,187.61 : x
  2. Step 2: Convert to fraction form
    3,866.37/5,335.57 = 2,187.61/x
  3. Step 3: Cross multiply
    3,866.37x = 5,335.57 × 2,187.61
  4. Step 4: Simplify right side
    3,866.37x = 11,672,135.68
  5. Step 5: Solve for x
    x = 11,672,135.68/3,866.37
  6. Step 6: Final answer
    x = 3,018.89

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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.