Home / 3,911.36-5,388.60-2,730.56

Finding the Fourth Proportional to 3,911.36, 5,388.60 and 2,730.56

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Solution

The fourth proportional to 3,911.36, 5,388.60 and 2,730.56 is: 3,761.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.36 : 5,388.60 = 2,730.56 : x
  2. Step 2: Convert to fraction form
    3,911.36/5,388.60 = 2,730.56/x
  3. Step 3: Cross multiply
    3,911.36x = 5,388.60 × 2,730.56
  4. Step 4: Simplify right side
    3,911.36x = 14,713,895.62
  5. Step 5: Solve for x
    x = 14,713,895.62/3,911.36
  6. Step 6: Final answer
    x = 3,761.84

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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.