Home / 3,956.80-5,460.21-2,188.37

Finding the Fourth Proportional to 3,956.80, 5,460.21 and 2,188.37

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Solution

The fourth proportional to 3,956.80, 5,460.21 and 2,188.37 is: 3,019.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.80 : 5,460.21 = 2,188.37 : x
  2. Step 2: Convert to fraction form
    3,956.80/5,460.21 = 2,188.37/x
  3. Step 3: Cross multiply
    3,956.80x = 5,460.21 × 2,188.37
  4. Step 4: Simplify right side
    3,956.80x = 11,948,942.69
  5. Step 5: Solve for x
    x = 11,948,942.69/3,956.80
  6. Step 6: Final answer
    x = 3,019.85

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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.