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Finding the Fourth Proportional to 1,818.82, 2,724.08 and 1,086.90

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Solution

The fourth proportional to 1,818.82, 2,724.08 and 1,086.90 is: 1,627.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.82 : 2,724.08 = 1,086.90 : x
  2. Step 2: Convert to fraction form
    1,818.82/2,724.08 = 1,086.90/x
  3. Step 3: Cross multiply
    1,818.82x = 2,724.08 × 1,086.90
  4. Step 4: Simplify right side
    1,818.82x = 2,960,802.55
  5. Step 5: Solve for x
    x = 2,960,802.55/1,818.82
  6. Step 6: Final answer
    x = 1,627.87

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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.