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Finding the Fourth Proportional to 4,479.81, 6,719.82 and 1,192.89

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Solution

The fourth proportional to 4,479.81, 6,719.82 and 1,192.89 is: 1,789.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.81 : 6,719.82 = 1,192.89 : x
  2. Step 2: Convert to fraction form
    4,479.81/6,719.82 = 1,192.89/x
  3. Step 3: Cross multiply
    4,479.81x = 6,719.82 × 1,192.89
  4. Step 4: Simplify right side
    4,479.81x = 8,016,006.08
  5. Step 5: Solve for x
    x = 8,016,006.08/4,479.81
  6. Step 6: Final answer
    x = 1,789.36

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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.