Home / 8,474.10-12,711.30-3,211.58

Finding the Fourth Proportional to 8,474.10, 12,711.30 and 3,211.58

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Solution

The fourth proportional to 8,474.10, 12,711.30 and 3,211.58 is: 4,817.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.10 : 12,711.30 = 3,211.58 : x
  2. Step 2: Convert to fraction form
    8,474.10/12,711.30 = 3,211.58/x
  3. Step 3: Cross multiply
    8,474.10x = 12,711.30 × 3,211.58
  4. Step 4: Simplify right side
    8,474.10x = 40,823,356.85
  5. Step 5: Solve for x
    x = 40,823,356.85/8,474.10
  6. Step 6: Final answer
    x = 4,817.43

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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.