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Finding the Fourth Proportional to 7,182.21, 10,771.21 and 2,798.62

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Solution

The fourth proportional to 7,182.21, 10,771.21 and 2,798.62 is: 4,197.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,182.21 : 10,771.21 = 2,798.62 : x
  2. Step 2: Convert to fraction form
    7,182.21/10,771.21 = 2,798.62/x
  3. Step 3: Cross multiply
    7,182.21x = 10,771.21 × 2,798.62
  4. Step 4: Simplify right side
    7,182.21x = 30,144,523.73
  5. Step 5: Solve for x
    x = 30,144,523.73/7,182.21
  6. Step 6: Final answer
    x = 4,197.11

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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.