Home / 7,948.14-11,920.11-3,779.85

Finding the Fourth Proportional to 7,948.14, 11,920.11 and 3,779.85

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Solution

The fourth proportional to 7,948.14, 11,920.11 and 3,779.85 is: 5,668.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,948.14 : 11,920.11 = 3,779.85 : x
  2. Step 2: Convert to fraction form
    7,948.14/11,920.11 = 3,779.85/x
  3. Step 3: Cross multiply
    7,948.14x = 11,920.11 × 3,779.85
  4. Step 4: Simplify right side
    7,948.14x = 45,056,227.78
  5. Step 5: Solve for x
    x = 45,056,227.78/7,948.14
  6. Step 6: Final answer
    x = 5,668.78

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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.