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Finding the Fourth Proportional to 4,885.81, 6,743.11 and 2,761.99

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Solution

The fourth proportional to 4,885.81, 6,743.11 and 2,761.99 is: 3,811.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,885.81 : 6,743.11 = 2,761.99 : x
  2. Step 2: Convert to fraction form
    4,885.81/6,743.11 = 2,761.99/x
  3. Step 3: Cross multiply
    4,885.81x = 6,743.11 × 2,761.99
  4. Step 4: Simplify right side
    4,885.81x = 18,624,402.39
  5. Step 5: Solve for x
    x = 18,624,402.39/4,885.81
  6. Step 6: Final answer
    x = 3,811.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.