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Finding the Fourth Proportional to 5,676.81, 8,516.95 and 2,905.45

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Solution

The fourth proportional to 5,676.81, 8,516.95 and 2,905.45 is: 4,359.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,676.81 : 8,516.95 = 2,905.45 : x
  2. Step 2: Convert to fraction form
    5,676.81/8,516.95 = 2,905.45/x
  3. Step 3: Cross multiply
    5,676.81x = 8,516.95 × 2,905.45
  4. Step 4: Simplify right side
    5,676.81x = 24,745,572.38
  5. Step 5: Solve for x
    x = 24,745,572.38/5,676.81
  6. Step 6: Final answer
    x = 4,359.06

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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.