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Finding the Fourth Proportional to 2,734.66, 4,102.26 and 885.70

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Solution

The fourth proportional to 2,734.66, 4,102.26 and 885.70 is: 1,328.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,734.66 : 4,102.26 = 885.70 : x
  2. Step 2: Convert to fraction form
    2,734.66/4,102.26 = 885.70/x
  3. Step 3: Cross multiply
    2,734.66x = 4,102.26 × 885.70
  4. Step 4: Simplify right side
    2,734.66x = 3,633,371.68
  5. Step 5: Solve for x
    x = 3,633,371.68/2,734.66
  6. Step 6: Final answer
    x = 1,328.64

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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.