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Finding the Fourth Proportional to 4,662.69, 6,990.61 and 2,196.12

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Solution

The fourth proportional to 4,662.69, 6,990.61 and 2,196.12 is: 3,292.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,662.69 : 6,990.61 = 2,196.12 : x
  2. Step 2: Convert to fraction form
    4,662.69/6,990.61 = 2,196.12/x
  3. Step 3: Cross multiply
    4,662.69x = 6,990.61 × 2,196.12
  4. Step 4: Simplify right side
    4,662.69x = 15,352,218.43
  5. Step 5: Solve for x
    x = 15,352,218.43/4,662.69
  6. Step 6: Final answer
    x = 3,292.57

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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.