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Finding the Fourth Proportional to 2,680.96, 4,012.80 and 2,104.96

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Solution

The fourth proportional to 2,680.96, 4,012.80 and 2,104.96 is: 3,150.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.96 : 4,012.80 = 2,104.96 : x
  2. Step 2: Convert to fraction form
    2,680.96/4,012.80 = 2,104.96/x
  3. Step 3: Cross multiply
    2,680.96x = 4,012.80 × 2,104.96
  4. Step 4: Simplify right side
    2,680.96x = 8,446,783.49
  5. Step 5: Solve for x
    x = 8,446,783.49/2,680.96
  6. Step 6: Final answer
    x = 3,150.66

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1.5x scale

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.