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Finding the Fourth Proportional to 4,221.57, 5,819.14 and 2,892.99

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Solution

The fourth proportional to 4,221.57, 5,819.14 and 2,892.99 is: 3,987.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221.57 : 5,819.14 = 2,892.99 : x
  2. Step 2: Convert to fraction form
    4,221.57/5,819.14 = 2,892.99/x
  3. Step 3: Cross multiply
    4,221.57x = 5,819.14 × 2,892.99
  4. Step 4: Simplify right side
    4,221.57x = 16,834,713.83
  5. Step 5: Solve for x
    x = 16,834,713.83/4,221.57
  6. Step 6: Final answer
    x = 3,987.79

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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.