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Finding the Fourth Proportional to 8,796.68, 12,138.90 and 4,817

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Solution

The fourth proportional to 8,796.68, 12,138.90 and 4,817 is: 6,647.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,796.68 : 12,138.90 = 4,817 : x
  2. Step 2: Convert to fraction form
    8,796.68/12,138.90 = 4,817/x
  3. Step 3: Cross multiply
    8,796.68x = 12,138.90 × 4,817
  4. Step 4: Simplify right side
    8,796.68x = 58,473,081.30
  5. Step 5: Solve for x
    x = 58,473,081.30/8,796.68
  6. Step 6: Final answer
    x = 6,647.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.