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Finding the Fourth Proportional to 6,788.88, 9,369.68 and 3,956.72

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Solution

The fourth proportional to 6,788.88, 9,369.68 and 3,956.72 is: 5,460.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,788.88 : 9,369.68 = 3,956.72 : x
  2. Step 2: Convert to fraction form
    6,788.88/9,369.68 = 3,956.72/x
  3. Step 3: Cross multiply
    6,788.88x = 9,369.68 × 3,956.72
  4. Step 4: Simplify right side
    6,788.88x = 37,073,133.62
  5. Step 5: Solve for x
    x = 37,073,133.62/6,788.88
  6. Step 6: Final answer
    x = 5,460.86

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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.