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Finding the Fourth Proportional to 1,819.45, 2,728.63 and 953.29

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Solution

The fourth proportional to 1,819.45, 2,728.63 and 953.29 is: 1,429.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.45 : 2,728.63 = 953.29 : x
  2. Step 2: Convert to fraction form
    1,819.45/2,728.63 = 953.29/x
  3. Step 3: Cross multiply
    1,819.45x = 2,728.63 × 953.29
  4. Step 4: Simplify right side
    1,819.45x = 2,601,175.69
  5. Step 5: Solve for x
    x = 2,601,175.69/1,819.45
  6. Step 6: Final answer
    x = 1,429.65

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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.