Home / 7,842.21-11,819.68-6,759.64

Finding the Fourth Proportional to 7,842.21, 11,819.68 and 6,759.64

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Solution

The fourth proportional to 7,842.21, 11,819.68 and 6,759.64 is: 10,188.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,842.21 : 11,819.68 = 6,759.64 : x
  2. Step 2: Convert to fraction form
    7,842.21/11,819.68 = 6,759.64/x
  3. Step 3: Cross multiply
    7,842.21x = 11,819.68 × 6,759.64
  4. Step 4: Simplify right side
    7,842.21x = 79,896,781.72
  5. Step 5: Solve for x
    x = 79,896,781.72/7,842.21
  6. Step 6: Final answer
    x = 10,188.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.