Home / 7,899.18-11,855.58-3,221.76

Finding the Fourth Proportional to 7,899.18, 11,855.58 and 3,221.76

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Solution

The fourth proportional to 7,899.18, 11,855.58 and 3,221.76 is: 4,835.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,899.18 : 11,855.58 = 3,221.76 : x
  2. Step 2: Convert to fraction form
    7,899.18/11,855.58 = 3,221.76/x
  3. Step 3: Cross multiply
    7,899.18x = 11,855.58 × 3,221.76
  4. Step 4: Simplify right side
    7,899.18x = 38,195,863.06
  5. Step 5: Solve for x
    x = 38,195,863.06/7,899.18
  6. Step 6: Final answer
    x = 4,835.42

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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.