Home / 7,342.20-11,012.76-2,147.76

Finding the Fourth Proportional to 7,342.20, 11,012.76 and 2,147.76

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Solution

The fourth proportional to 7,342.20, 11,012.76 and 2,147.76 is: 3,221.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,342.20 : 11,012.76 = 2,147.76 : x
  2. Step 2: Convert to fraction form
    7,342.20/11,012.76 = 2,147.76/x
  3. Step 3: Cross multiply
    7,342.20x = 11,012.76 × 2,147.76
  4. Step 4: Simplify right side
    7,342.20x = 23,652,765.42
  5. Step 5: Solve for x
    x = 23,652,765.42/7,342.20
  6. Step 6: Final answer
    x = 3,221.48

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1.5x scale

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.