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Finding the Fourth Proportional to 1,898.32, 2,849.64 and 1,820.56

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Solution

The fourth proportional to 1,898.32, 2,849.64 and 1,820.56 is: 2,732.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.32 : 2,849.64 = 1,820.56 : x
  2. Step 2: Convert to fraction form
    1,898.32/2,849.64 = 1,820.56/x
  3. Step 3: Cross multiply
    1,898.32x = 2,849.64 × 1,820.56
  4. Step 4: Simplify right side
    1,898.32x = 5,187,940.60
  5. Step 5: Solve for x
    x = 5,187,940.60/1,898.32
  6. Step 6: Final answer
    x = 2,732.91

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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.