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Finding the Fourth Proportional to 8,339.84, 12,525.96 and 6,139.88

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Solution

The fourth proportional to 8,339.84, 12,525.96 and 6,139.88 is: 9,221.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.84 : 12,525.96 = 6,139.88 : x
  2. Step 2: Convert to fraction form
    8,339.84/12,525.96 = 6,139.88/x
  3. Step 3: Cross multiply
    8,339.84x = 12,525.96 × 6,139.88
  4. Step 4: Simplify right side
    8,339.84x = 76,907,891.28
  5. Step 5: Solve for x
    x = 76,907,891.28/8,339.84
  6. Step 6: Final answer
    x = 9,221.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.