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Finding the Fourth Proportional to 8,648.76, 12,974.96 and 2,804.91

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Solution

The fourth proportional to 8,648.76, 12,974.96 and 2,804.91 is: 4,207.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.76 : 12,974.96 = 2,804.91 : x
  2. Step 2: Convert to fraction form
    8,648.76/12,974.96 = 2,804.91/x
  3. Step 3: Cross multiply
    8,648.76x = 12,974.96 × 2,804.91
  4. Step 4: Simplify right side
    8,648.76x = 36,393,581.03
  5. Step 5: Solve for x
    x = 36,393,581.03/8,648.76
  6. Step 6: Final answer
    x = 4,207.96

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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.