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Finding the Fourth Proportional to 8,576.48, 12,861.56 and 2,953

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Solution

The fourth proportional to 8,576.48, 12,861.56 and 2,953 is: 4,428.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,576.48 : 12,861.56 = 2,953 : x
  2. Step 2: Convert to fraction form
    8,576.48/12,861.56 = 2,953/x
  3. Step 3: Cross multiply
    8,576.48x = 12,861.56 × 2,953
  4. Step 4: Simplify right side
    8,576.48x = 37,980,186.68
  5. Step 5: Solve for x
    x = 37,980,186.68/8,576.48
  6. Step 6: Final answer
    x = 4,428.41

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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.