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Finding the Fourth Proportional to 4,479.87, 6,719.80 and 1,192.97

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Solution

The fourth proportional to 4,479.87, 6,719.80 and 1,192.97 is: 1,789.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.87 : 6,719.80 = 1,192.97 : x
  2. Step 2: Convert to fraction form
    4,479.87/6,719.80 = 1,192.97/x
  3. Step 3: Cross multiply
    4,479.87x = 6,719.80 × 1,192.97
  4. Step 4: Simplify right side
    4,479.87x = 8,016,533.62
  5. Step 5: Solve for x
    x = 8,016,533.62/4,479.87
  6. Step 6: Final answer
    x = 1,789.46

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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.