Home / 3,121.96-4,306.50-2,017.96

Finding the Fourth Proportional to 3,121.96, 4,306.50 and 2,017.96

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Solution

The fourth proportional to 3,121.96, 4,306.50 and 2,017.96 is: 2,783.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.96 : 4,306.50 = 2,017.96 : x
  2. Step 2: Convert to fraction form
    3,121.96/4,306.50 = 2,017.96/x
  3. Step 3: Cross multiply
    3,121.96x = 4,306.50 × 2,017.96
  4. Step 4: Simplify right side
    3,121.96x = 8,690,344.74
  5. Step 5: Solve for x
    x = 8,690,344.74/3,121.96
  6. Step 6: Final answer
    x = 2,783.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.