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Finding the Fourth Proportional to 3,808.96, 5,252.20 and 2,926.88

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Solution

The fourth proportional to 3,808.96, 5,252.20 and 2,926.88 is: 4,035.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.96 : 5,252.20 = 2,926.88 : x
  2. Step 2: Convert to fraction form
    3,808.96/5,252.20 = 2,926.88/x
  3. Step 3: Cross multiply
    3,808.96x = 5,252.20 × 2,926.88
  4. Step 4: Simplify right side
    3,808.96x = 15,372,559.14
  5. Step 5: Solve for x
    x = 15,372,559.14/3,808.96
  6. Step 6: Final answer
    x = 4,035.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.