Home / 4,118.21-6,171.84-2,171.78

Finding the Fourth Proportional to 4,118.21, 6,171.84 and 2,171.78

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Solution

The fourth proportional to 4,118.21, 6,171.84 and 2,171.78 is: 3,254.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,118.21 : 6,171.84 = 2,171.78 : x
  2. Step 2: Convert to fraction form
    4,118.21/6,171.84 = 2,171.78/x
  3. Step 3: Cross multiply
    4,118.21x = 6,171.84 × 2,171.78
  4. Step 4: Simplify right side
    4,118.21x = 13,403,878.68
  5. Step 5: Solve for x
    x = 13,403,878.68/4,118.21
  6. Step 6: Final answer
    x = 3,254.78

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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.