Home / 3,990.24-5,943.92-3,771.36

Finding the Fourth Proportional to 3,990.24, 5,943.92 and 3,771.36

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Solution

The fourth proportional to 3,990.24, 5,943.92 and 3,771.36 is: 5,617.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.24 : 5,943.92 = 3,771.36 : x
  2. Step 2: Convert to fraction form
    3,990.24/5,943.92 = 3,771.36/x
  3. Step 3: Cross multiply
    3,990.24x = 5,943.92 × 3,771.36
  4. Step 4: Simplify right side
    3,990.24x = 22,416,662.13
  5. Step 5: Solve for x
    x = 22,416,662.13/3,990.24
  6. Step 6: Final answer
    x = 5,617.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.