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Finding the Fourth Proportional to 5,281.89, 7,917.94 and 2,684.22

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Solution

The fourth proportional to 5,281.89, 7,917.94 and 2,684.22 is: 4,023.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.89 : 7,917.94 = 2,684.22 : x
  2. Step 2: Convert to fraction form
    5,281.89/7,917.94 = 2,684.22/x
  3. Step 3: Cross multiply
    5,281.89x = 7,917.94 × 2,684.22
  4. Step 4: Simplify right side
    5,281.89x = 21,253,492.91
  5. Step 5: Solve for x
    x = 21,253,492.91/5,281.89
  6. Step 6: Final answer
    x = 4,023.84

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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.