Home / 3,993.20-5,981.84-3,123.44

Finding the Fourth Proportional to 3,993.20, 5,981.84 and 3,123.44

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Solution

The fourth proportional to 3,993.20, 5,981.84 and 3,123.44 is: 4,678.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.20 : 5,981.84 = 3,123.44 : x
  2. Step 2: Convert to fraction form
    3,993.20/5,981.84 = 3,123.44/x
  3. Step 3: Cross multiply
    3,993.20x = 5,981.84 × 3,123.44
  4. Step 4: Simplify right side
    3,993.20x = 18,683,918.33
  5. Step 5: Solve for x
    x = 18,683,918.33/3,993.20
  6. Step 6: Final answer
    x = 4,678.93

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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.