Home / 5,311.25-7,967.82-2,189.52

Finding the Fourth Proportional to 5,311.25, 7,967.82 and 2,189.52

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Solution

The fourth proportional to 5,311.25, 7,967.82 and 2,189.52 is: 3,284.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.25 : 7,967.82 = 2,189.52 : x
  2. Step 2: Convert to fraction form
    5,311.25/7,967.82 = 2,189.52/x
  3. Step 3: Cross multiply
    5,311.25x = 7,967.82 × 2,189.52
  4. Step 4: Simplify right side
    5,311.25x = 17,445,709.46
  5. Step 5: Solve for x
    x = 17,445,709.46/5,311.25
  6. Step 6: Final answer
    x = 3,284.67

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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.