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Finding the Fourth Proportional to 8,610.10, 12,915.24 and 3,676.66

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Solution

The fourth proportional to 8,610.10, 12,915.24 and 3,676.66 is: 5,515.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.10 : 12,915.24 = 3,676.66 : x
  2. Step 2: Convert to fraction form
    8,610.10/12,915.24 = 3,676.66/x
  3. Step 3: Cross multiply
    8,610.10x = 12,915.24 × 3,676.66
  4. Step 4: Simplify right side
    8,610.10x = 47,484,946.30
  5. Step 5: Solve for x
    x = 47,484,946.30/8,610.10
  6. Step 6: Final answer
    x = 5,515.03

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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.