Home / 3,969.20-5,477.40-2,200.82

Finding the Fourth Proportional to 3,969.20, 5,477.40 and 2,200.82

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Solution

The fourth proportional to 3,969.20, 5,477.40 and 2,200.82 is: 3,037.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.20 : 5,477.40 = 2,200.82 : x
  2. Step 2: Convert to fraction form
    3,969.20/5,477.40 = 2,200.82/x
  3. Step 3: Cross multiply
    3,969.20x = 5,477.40 × 2,200.82
  4. Step 4: Simplify right side
    3,969.20x = 12,054,771.47
  5. Step 5: Solve for x
    x = 12,054,771.47/3,969.20
  6. Step 6: Final answer
    x = 3,037.08

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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.