Home / 3,765.21-5,643.79-2,009.13

Finding the Fourth Proportional to 3,765.21, 5,643.79 and 2,009.13

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Solution

The fourth proportional to 3,765.21, 5,643.79 and 2,009.13 is: 3,011.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.21 : 5,643.79 = 2,009.13 : x
  2. Step 2: Convert to fraction form
    3,765.21/5,643.79 = 2,009.13/x
  3. Step 3: Cross multiply
    3,765.21x = 5,643.79 × 2,009.13
  4. Step 4: Simplify right side
    3,765.21x = 11,339,107.80
  5. Step 5: Solve for x
    x = 11,339,107.80/3,765.21
  6. Step 6: Final answer
    x = 3,011.55

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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.