Home / 5,181.20-7,756.56-3,422.96

Finding the Fourth Proportional to 5,181.20, 7,756.56 and 3,422.96

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Solution

The fourth proportional to 5,181.20, 7,756.56 and 3,422.96 is: 5,124.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.20 : 7,756.56 = 3,422.96 : x
  2. Step 2: Convert to fraction form
    5,181.20/7,756.56 = 3,422.96/x
  3. Step 3: Cross multiply
    5,181.20x = 7,756.56 × 3,422.96
  4. Step 4: Simplify right side
    5,181.20x = 26,550,394.62
  5. Step 5: Solve for x
    x = 26,550,394.62/5,181.20
  6. Step 6: Final answer
    x = 5,124.37

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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.