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Finding the Fourth Proportional to 5,815.72, 8,726.46 and 2,305.65

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Solution

The fourth proportional to 5,815.72, 8,726.46 and 2,305.65 is: 3,459.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.72 : 8,726.46 = 2,305.65 : x
  2. Step 2: Convert to fraction form
    5,815.72/8,726.46 = 2,305.65/x
  3. Step 3: Cross multiply
    5,815.72x = 8,726.46 × 2,305.65
  4. Step 4: Simplify right side
    5,815.72x = 20,120,162.50
  5. Step 5: Solve for x
    x = 20,120,162.50/5,815.72
  6. Step 6: Final answer
    x = 3,459.62

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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.