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Finding the Fourth Proportional to 3,956.58, 5,460 and 2,188.32

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Solution

The fourth proportional to 3,956.58, 5,460 and 2,188.32 is: 3,019.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,956.58 : 5,460 = 2,188.32 : x
  2. Step 2: Convert to fraction form
    3,956.58/5,460 = 2,188.32/x
  3. Step 3: Cross multiply
    3,956.58x = 5,460 × 2,188.32
  4. Step 4: Simplify right side
    3,956.58x = 11,948,227.20
  5. Step 5: Solve for x
    x = 11,948,227.20/3,956.58
  6. Step 6: Final answer
    x = 3,019.84

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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.