Home / 3,993.20-5,507.80-3,247.16

Finding the Fourth Proportional to 3,993.20, 5,507.80 and 3,247.16

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Solution

The fourth proportional to 3,993.20, 5,507.80 and 3,247.16 is: 4,478.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.20 : 5,507.80 = 3,247.16 : x
  2. Step 2: Convert to fraction form
    3,993.20/5,507.80 = 3,247.16/x
  3. Step 3: Cross multiply
    3,993.20x = 5,507.80 × 3,247.16
  4. Step 4: Simplify right side
    3,993.20x = 17,884,707.85
  5. Step 5: Solve for x
    x = 17,884,707.85/3,993.20
  6. Step 6: Final answer
    x = 4,478.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.