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Finding the Fourth Proportional to 2,818.92, 3,892.16 and 1,824.76

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Solution

The fourth proportional to 2,818.92, 3,892.16 and 1,824.76 is: 2,519.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.92 : 3,892.16 = 1,824.76 : x
  2. Step 2: Convert to fraction form
    2,818.92/3,892.16 = 1,824.76/x
  3. Step 3: Cross multiply
    2,818.92x = 3,892.16 × 1,824.76
  4. Step 4: Simplify right side
    2,818.92x = 7,102,257.88
  5. Step 5: Solve for x
    x = 7,102,257.88/2,818.92
  6. Step 6: Final answer
    x = 2,519.50

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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.