Home / 3,955.77-5,458.91-2,187.38

Finding the Fourth Proportional to 3,955.77, 5,458.91 and 2,187.38

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Solution

The fourth proportional to 3,955.77, 5,458.91 and 2,187.38 is: 3,018.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.77 : 5,458.91 = 2,187.38 : x
  2. Step 2: Convert to fraction form
    3,955.77/5,458.91 = 2,187.38/x
  3. Step 3: Cross multiply
    3,955.77x = 5,458.91 × 2,187.38
  4. Step 4: Simplify right side
    3,955.77x = 11,940,713.27
  5. Step 5: Solve for x
    x = 11,940,713.27/3,955.77
  6. Step 6: Final answer
    x = 3,018.56

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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.