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Finding the Fourth Proportional to 7,181.80, 10,770.65 and 3,021.79

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Solution

The fourth proportional to 7,181.80, 10,770.65 and 3,021.79 is: 4,531.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.80 : 10,770.65 = 3,021.79 : x
  2. Step 2: Convert to fraction form
    7,181.80/10,770.65 = 3,021.79/x
  3. Step 3: Cross multiply
    7,181.80x = 10,770.65 × 3,021.79
  4. Step 4: Simplify right side
    7,181.80x = 32,546,642.46
  5. Step 5: Solve for x
    x = 32,546,642.46/7,181.80
  6. Step 6: Final answer
    x = 4,531.82

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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.