Home / 3,956.22-5,459.36-2,187.72

Finding the Fourth Proportional to 3,956.22, 5,459.36 and 2,187.72

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Solution

The fourth proportional to 3,956.22, 5,459.36 and 2,187.72 is: 3,018.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.22 : 5,459.36 = 2,187.72 : x
  2. Step 2: Convert to fraction form
    3,956.22/5,459.36 = 2,187.72/x
  3. Step 3: Cross multiply
    3,956.22x = 5,459.36 × 2,187.72
  4. Step 4: Simplify right side
    3,956.22x = 11,943,540.12
  5. Step 5: Solve for x
    x = 11,943,540.12/3,956.22
  6. Step 6: Final answer
    x = 3,018.93

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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.