Home / 7,421.28-11,131.92-3,037.74

Finding the Fourth Proportional to 7,421.28, 11,131.92 and 3,037.74

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Solution

The fourth proportional to 7,421.28, 11,131.92 and 3,037.74 is: 4,556.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.28 : 11,131.92 = 3,037.74 : x
  2. Step 2: Convert to fraction form
    7,421.28/11,131.92 = 3,037.74/x
  3. Step 3: Cross multiply
    7,421.28x = 11,131.92 × 3,037.74
  4. Step 4: Simplify right side
    7,421.28x = 33,815,878.66
  5. Step 5: Solve for x
    x = 33,815,878.66/7,421.28
  6. Step 6: Final answer
    x = 4,556.61

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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.