Home / 7,421.58-11,135.68-3,910.74

Finding the Fourth Proportional to 7,421.58, 11,135.68 and 3,910.74

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Solution

The fourth proportional to 7,421.58, 11,135.68 and 3,910.74 is: 5,867.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.58 : 11,135.68 = 3,910.74 : x
  2. Step 2: Convert to fraction form
    7,421.58/11,135.68 = 3,910.74/x
  3. Step 3: Cross multiply
    7,421.58x = 11,135.68 × 3,910.74
  4. Step 4: Simplify right side
    7,421.58x = 43,548,749.20
  5. Step 5: Solve for x
    x = 43,548,749.20/7,421.58
  6. Step 6: Final answer
    x = 5,867.85

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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.