Home / 3,956.10-5,459.34-2,187.78

Finding the Fourth Proportional to 3,956.10, 5,459.34 and 2,187.78

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Solution

The fourth proportional to 3,956.10, 5,459.34 and 2,187.78 is: 3,019.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.10 : 5,459.34 = 2,187.78 : x
  2. Step 2: Convert to fraction form
    3,956.10/5,459.34 = 2,187.78/x
  3. Step 3: Cross multiply
    3,956.10x = 5,459.34 × 2,187.78
  4. Step 4: Simplify right side
    3,956.10x = 11,943,834.87
  5. Step 5: Solve for x
    x = 11,943,834.87/3,956.10
  6. Step 6: Final answer
    x = 3,019.09

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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.