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Finding the Fourth Proportional to 3,993.99, 5,990.99 and 3,133.77

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Solution

The fourth proportional to 3,993.99, 5,990.99 and 3,133.77 is: 4,700.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.99 : 5,990.99 = 3,133.77 : x
  2. Step 2: Convert to fraction form
    3,993.99/5,990.99 = 3,133.77/x
  3. Step 3: Cross multiply
    3,993.99x = 5,990.99 × 3,133.77
  4. Step 4: Simplify right side
    3,993.99x = 18,774,369.06
  5. Step 5: Solve for x
    x = 18,774,369.06/3,993.99
  6. Step 6: Final answer
    x = 4,700.66

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Half scale
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Double scale
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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.