Home / 7,882.86-11,819.96-3,438.69

Finding the Fourth Proportional to 7,882.86, 11,819.96 and 3,438.69

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Solution

The fourth proportional to 7,882.86, 11,819.96 and 3,438.69 is: 5,156.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,882.86 : 11,819.96 = 3,438.69 : x
  2. Step 2: Convert to fraction form
    7,882.86/11,819.96 = 3,438.69/x
  3. Step 3: Cross multiply
    7,882.86x = 11,819.96 × 3,438.69
  4. Step 4: Simplify right side
    7,882.86x = 40,645,178.25
  5. Step 5: Solve for x
    x = 40,645,178.25/7,882.86
  6. Step 6: Final answer
    x = 5,156.15

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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.