Home / 3,956.49-5,459.31-2,187.75

Finding the Fourth Proportional to 3,956.49, 5,459.31 and 2,187.75

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Solution

The fourth proportional to 3,956.49, 5,459.31 and 2,187.75 is: 3,018.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.49 : 5,459.31 = 2,187.75 : x
  2. Step 2: Convert to fraction form
    3,956.49/5,459.31 = 2,187.75/x
  3. Step 3: Cross multiply
    3,956.49x = 5,459.31 × 2,187.75
  4. Step 4: Simplify right side
    3,956.49x = 11,943,605.45
  5. Step 5: Solve for x
    x = 11,943,605.45/3,956.49
  6. Step 6: Final answer
    x = 3,018.74

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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.