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Finding the Fourth Proportional to 2,668.14, 4,000.68 and 818.76

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Solution

The fourth proportional to 2,668.14, 4,000.68 and 818.76 is: 1,227.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.14 : 4,000.68 = 818.76 : x
  2. Step 2: Convert to fraction form
    2,668.14/4,000.68 = 818.76/x
  3. Step 3: Cross multiply
    2,668.14x = 4,000.68 × 818.76
  4. Step 4: Simplify right side
    2,668.14x = 3,275,596.76
  5. Step 5: Solve for x
    x = 3,275,596.76/2,668.14
  6. Step 6: Final answer
    x = 1,227.67

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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.