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Finding the Fourth Proportional to 2,668.80, 3,994.56 and 1,511.04

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Solution

The fourth proportional to 2,668.80, 3,994.56 and 1,511.04 is: 2,261.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.80 : 3,994.56 = 1,511.04 : x
  2. Step 2: Convert to fraction form
    2,668.80/3,994.56 = 1,511.04/x
  3. Step 3: Cross multiply
    2,668.80x = 3,994.56 × 1,511.04
  4. Step 4: Simplify right side
    2,668.80x = 6,035,939.94
  5. Step 5: Solve for x
    x = 6,035,939.94/2,668.80
  6. Step 6: Final answer
    x = 2,261.67

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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.