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Finding the Fourth Proportional to 3,185.27, 4,778.71 and 994.01

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Solution

The fourth proportional to 3,185.27, 4,778.71 and 994.01 is: 1,491.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.27 : 4,778.71 = 994.01 : x
  2. Step 2: Convert to fraction form
    3,185.27/4,778.71 = 994.01/x
  3. Step 3: Cross multiply
    3,185.27x = 4,778.71 × 994.01
  4. Step 4: Simplify right side
    3,185.27x = 4,750,094.99
  5. Step 5: Solve for x
    x = 4,750,094.99/3,185.27
  6. Step 6: Final answer
    x = 1,491.27

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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.