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Finding the Fourth Proportional to 3,993.52, 5,995.68 and 3,118.72

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Solution

The fourth proportional to 3,993.52, 5,995.68 and 3,118.72 is: 4,682.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.52 : 5,995.68 = 3,118.72 : x
  2. Step 2: Convert to fraction form
    3,993.52/5,995.68 = 3,118.72/x
  3. Step 3: Cross multiply
    3,993.52x = 5,995.68 × 3,118.72
  4. Step 4: Simplify right side
    3,993.52x = 18,698,847.13
  5. Step 5: Solve for x
    x = 18,698,847.13/3,993.52
  6. Step 6: Final answer
    x = 4,682.30

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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.