Home / 3,911.36-5,399.20-2,651.76

Finding the Fourth Proportional to 3,911.36, 5,399.20 and 2,651.76

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Solution

The fourth proportional to 3,911.36, 5,399.20 and 2,651.76 is: 3,660.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.36 : 5,399.20 = 2,651.76 : x
  2. Step 2: Convert to fraction form
    3,911.36/5,399.20 = 2,651.76/x
  3. Step 3: Cross multiply
    3,911.36x = 5,399.20 × 2,651.76
  4. Step 4: Simplify right side
    3,911.36x = 14,317,382.59
  5. Step 5: Solve for x
    x = 14,317,382.59/3,911.36
  6. Step 6: Final answer
    x = 3,660.46

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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.