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Finding the Fourth Proportional to 7,956.62, 10,979.82 and 4,420.05

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Solution

The fourth proportional to 7,956.62, 10,979.82 and 4,420.05 is: 6,099.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,956.62 : 10,979.82 = 4,420.05 : x
  2. Step 2: Convert to fraction form
    7,956.62/10,979.82 = 4,420.05/x
  3. Step 3: Cross multiply
    7,956.62x = 10,979.82 × 4,420.05
  4. Step 4: Simplify right side
    7,956.62x = 48,531,353.39
  5. Step 5: Solve for x
    x = 48,531,353.39/7,956.62
  6. Step 6: Final answer
    x = 6,099.50

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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.