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Finding the Fourth Proportional to 6,645.70, 9,968.91 and 2,486.80

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Solution

The fourth proportional to 6,645.70, 9,968.91 and 2,486.80 is: 3,730.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.70 : 9,968.91 = 2,486.80 : x
  2. Step 2: Convert to fraction form
    6,645.70/9,968.91 = 2,486.80/x
  3. Step 3: Cross multiply
    6,645.70x = 9,968.91 × 2,486.80
  4. Step 4: Simplify right side
    6,645.70x = 24,790,685.39
  5. Step 5: Solve for x
    x = 24,790,685.39/6,645.70
  6. Step 6: Final answer
    x = 3,730.33

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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.