Home / 3,969.48-5,477.88-2,201.20

Finding the Fourth Proportional to 3,969.48, 5,477.88 and 2,201.20

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Solution

The fourth proportional to 3,969.48, 5,477.88 and 2,201.20 is: 3,037.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.48 : 5,477.88 = 2,201.20 : x
  2. Step 2: Convert to fraction form
    3,969.48/5,477.88 = 2,201.20/x
  3. Step 3: Cross multiply
    3,969.48x = 5,477.88 × 2,201.20
  4. Step 4: Simplify right side
    3,969.48x = 12,057,909.46
  5. Step 5: Solve for x
    x = 12,057,909.46/3,969.48
  6. Step 6: Final answer
    x = 3,037.65

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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.