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Finding the Fourth Proportional to 5,328.82, 7,990.72 and 1,817.88

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Solution

The fourth proportional to 5,328.82, 7,990.72 and 1,817.88 is: 2,725.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.82 : 7,990.72 = 1,817.88 : x
  2. Step 2: Convert to fraction form
    5,328.82/7,990.72 = 1,817.88/x
  3. Step 3: Cross multiply
    5,328.82x = 7,990.72 × 1,817.88
  4. Step 4: Simplify right side
    5,328.82x = 14,526,170.07
  5. Step 5: Solve for x
    x = 14,526,170.07/5,328.82
  6. Step 6: Final answer
    x = 2,725.96

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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.