Home / 2,104.18-3,156.30-871.29

Finding the Fourth Proportional to 2,104.18, 3,156.30 and 871.29

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Solution

The fourth proportional to 2,104.18, 3,156.30 and 871.29 is: 1,306.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.18 : 3,156.30 = 871.29 : x
  2. Step 2: Convert to fraction form
    2,104.18/3,156.30 = 871.29/x
  3. Step 3: Cross multiply
    2,104.18x = 3,156.30 × 871.29
  4. Step 4: Simplify right side
    2,104.18x = 2,750,052.63
  5. Step 5: Solve for x
    x = 2,750,052.63/2,104.18
  6. Step 6: Final answer
    x = 1,306.95

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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.