Home / 2,871.91-4,305.23-1,118.09

Finding the Fourth Proportional to 2,871.91, 4,305.23 and 1,118.09

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Solution

The fourth proportional to 2,871.91, 4,305.23 and 1,118.09 is: 1,676.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,871.91 : 4,305.23 = 1,118.09 : x
  2. Step 2: Convert to fraction form
    2,871.91/4,305.23 = 1,118.09/x
  3. Step 3: Cross multiply
    2,871.91x = 4,305.23 × 1,118.09
  4. Step 4: Simplify right side
    2,871.91x = 4,813,634.61
  5. Step 5: Solve for x
    x = 4,813,634.61/2,871.91
  6. Step 6: Final answer
    x = 1,676.11

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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.