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Finding the Fourth Proportional to 3,609.80, 5,414.08 and 1,012.12

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Solution

The fourth proportional to 3,609.80, 5,414.08 and 1,012.12 is: 1,518.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.80 : 5,414.08 = 1,012.12 : x
  2. Step 2: Convert to fraction form
    3,609.80/5,414.08 = 1,012.12/x
  3. Step 3: Cross multiply
    3,609.80x = 5,414.08 × 1,012.12
  4. Step 4: Simplify right side
    3,609.80x = 5,479,698.65
  5. Step 5: Solve for x
    x = 5,479,698.65/3,609.80
  6. Step 6: Final answer
    x = 1,518.01

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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.