Home / 3,631.32-5,448.95-2,811.20

Finding the Fourth Proportional to 3,631.32, 5,448.95 and 2,811.20

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Solution

The fourth proportional to 3,631.32, 5,448.95 and 2,811.20 is: 4,218.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,631.32 : 5,448.95 = 2,811.20 : x
  2. Step 2: Convert to fraction form
    3,631.32/5,448.95 = 2,811.20/x
  3. Step 3: Cross multiply
    3,631.32x = 5,448.95 × 2,811.20
  4. Step 4: Simplify right side
    3,631.32x = 15,318,046.94
  5. Step 5: Solve for x
    x = 15,318,046.94/3,631.32
  6. Step 6: Final answer
    x = 4,218.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.