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Finding the Fourth Proportional to 6,967.89, 9,615.39 and 3,823.88

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Solution

The fourth proportional to 6,967.89, 9,615.39 and 3,823.88 is: 5,276.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,967.89 : 9,615.39 = 3,823.88 : x
  2. Step 2: Convert to fraction form
    6,967.89/9,615.39 = 3,823.88/x
  3. Step 3: Cross multiply
    6,967.89x = 9,615.39 × 3,823.88
  4. Step 4: Simplify right side
    6,967.89x = 36,768,049.44
  5. Step 5: Solve for x
    x = 36,768,049.44/6,967.89
  6. Step 6: Final answer
    x = 5,276.78

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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.