Home / 3,956.78-5,460.45-2,188.42

Finding the Fourth Proportional to 3,956.78, 5,460.45 and 2,188.42

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Solution

The fourth proportional to 3,956.78, 5,460.45 and 2,188.42 is: 3,020.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.78 : 5,460.45 = 2,188.42 : x
  2. Step 2: Convert to fraction form
    3,956.78/5,460.45 = 2,188.42/x
  3. Step 3: Cross multiply
    3,956.78x = 5,460.45 × 2,188.42
  4. Step 4: Simplify right side
    3,956.78x = 11,949,757.99
  5. Step 5: Solve for x
    x = 11,949,757.99/3,956.78
  6. Step 6: Final answer
    x = 3,020.07

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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.