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Finding the Fourth Proportional to 8,579.65, 12,876.86 and 4,889.29

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Solution

The fourth proportional to 8,579.65, 12,876.86 and 4,889.29 is: 7,338.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.65 : 12,876.86 = 4,889.29 : x
  2. Step 2: Convert to fraction form
    8,579.65/12,876.86 = 4,889.29/x
  3. Step 3: Cross multiply
    8,579.65x = 12,876.86 × 4,889.29
  4. Step 4: Simplify right side
    8,579.65x = 62,958,702.83
  5. Step 5: Solve for x
    x = 62,958,702.83/8,579.65
  6. Step 6: Final answer
    x = 7,338.14

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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.