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Finding the Fourth Proportional to 8,576.60, 12,864.90 and 3,029.90

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Solution

The fourth proportional to 8,576.60, 12,864.90 and 3,029.90 is: 4,544.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,576.60 : 12,864.90 = 3,029.90 : x
  2. Step 2: Convert to fraction form
    8,576.60/12,864.90 = 3,029.90/x
  3. Step 3: Cross multiply
    8,576.60x = 12,864.90 × 3,029.90
  4. Step 4: Simplify right side
    8,576.60x = 38,979,360.51
  5. Step 5: Solve for x
    x = 38,979,360.51/8,576.60
  6. Step 6: Final answer
    x = 4,544.85

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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.