Home / 3,991.24-5,508.32-2,420.44

Finding the Fourth Proportional to 3,991.24, 5,508.32 and 2,420.44

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Solution

The fourth proportional to 3,991.24, 5,508.32 and 2,420.44 is: 3,340.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.24 : 5,508.32 = 2,420.44 : x
  2. Step 2: Convert to fraction form
    3,991.24/5,508.32 = 2,420.44/x
  3. Step 3: Cross multiply
    3,991.24x = 5,508.32 × 2,420.44
  4. Step 4: Simplify right side
    3,991.24x = 13,332,558.06
  5. Step 5: Solve for x
    x = 13,332,558.06/3,991.24
  6. Step 6: Final answer
    x = 3,340.46

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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.