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Finding the Fourth Proportional to 2,684.20, 4,026.60 and 834.88

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Solution

The fourth proportional to 2,684.20, 4,026.60 and 834.88 is: 1,252.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,684.20 : 4,026.60 = 834.88 : x
  2. Step 2: Convert to fraction form
    2,684.20/4,026.60 = 834.88/x
  3. Step 3: Cross multiply
    2,684.20x = 4,026.60 × 834.88
  4. Step 4: Simplify right side
    2,684.20x = 3,361,727.81
  5. Step 5: Solve for x
    x = 3,361,727.81/2,684.20
  6. Step 6: Final answer
    x = 1,252.41

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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.