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Finding the Fourth Proportional to 3,492.17, 4,819.11 and 1,898.78

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Solution

The fourth proportional to 3,492.17, 4,819.11 and 1,898.78 is: 2,620.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,492.17 : 4,819.11 = 1,898.78 : x
  2. Step 2: Convert to fraction form
    3,492.17/4,819.11 = 1,898.78/x
  3. Step 3: Cross multiply
    3,492.17x = 4,819.11 × 1,898.78
  4. Step 4: Simplify right side
    3,492.17x = 9,150,429.69
  5. Step 5: Solve for x
    x = 9,150,429.69/3,492.17
  6. Step 6: Final answer
    x = 2,620.27

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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.