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Finding the Fourth Proportional to 8,414.50, 12,621.99 and 2,258.50

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Solution

The fourth proportional to 8,414.50, 12,621.99 and 2,258.50 is: 3,387.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,414.50 : 12,621.99 = 2,258.50 : x
  2. Step 2: Convert to fraction form
    8,414.50/12,621.99 = 2,258.50/x
  3. Step 3: Cross multiply
    8,414.50x = 12,621.99 × 2,258.50
  4. Step 4: Simplify right side
    8,414.50x = 28,506,764.42
  5. Step 5: Solve for x
    x = 28,506,764.42/8,414.50
  6. Step 6: Final answer
    x = 3,387.81

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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.