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Finding the Fourth Proportional to 4,119.62, 6,179.40 and 999.62

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Solution

The fourth proportional to 4,119.62, 6,179.40 and 999.62 is: 1,499.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,119.62 : 6,179.40 = 999.62 : x
  2. Step 2: Convert to fraction form
    4,119.62/6,179.40 = 999.62/x
  3. Step 3: Cross multiply
    4,119.62x = 6,179.40 × 999.62
  4. Step 4: Simplify right side
    4,119.62x = 6,177,020.93
  5. Step 5: Solve for x
    x = 6,177,020.93/4,119.62
  6. Step 6: Final answer
    x = 1,499.42

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Similar ratio
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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.