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Finding the Fourth Proportional to 7,842.66, 11,767.60 and 3,401.68

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Solution

The fourth proportional to 7,842.66, 11,767.60 and 3,401.68 is: 5,104.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,842.66 : 11,767.60 = 3,401.68 : x
  2. Step 2: Convert to fraction form
    7,842.66/11,767.60 = 3,401.68/x
  3. Step 3: Cross multiply
    7,842.66x = 11,767.60 × 3,401.68
  4. Step 4: Simplify right side
    7,842.66x = 40,029,609.57
  5. Step 5: Solve for x
    x = 40,029,609.57/7,842.66
  6. Step 6: Final answer
    x = 5,104.09

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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.