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Finding the Fourth Proportional to 7,956.38, 10,978.88 and 4,419.02

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Solution

The fourth proportional to 7,956.38, 10,978.88 and 4,419.02 is: 6,097.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,956.38 : 10,978.88 = 4,419.02 : x
  2. Step 2: Convert to fraction form
    7,956.38/10,978.88 = 4,419.02/x
  3. Step 3: Cross multiply
    7,956.38x = 10,978.88 × 4,419.02
  4. Step 4: Simplify right side
    7,956.38x = 48,515,890.30
  5. Step 5: Solve for x
    x = 48,515,890.30/7,956.38
  6. Step 6: Final answer
    x = 6,097.73

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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.