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Finding the Fourth Proportional to 1,814.78, 2,722.19 and 950.78

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Solution

The fourth proportional to 1,814.78, 2,722.19 and 950.78 is: 1,426.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.78 : 2,722.19 = 950.78 : x
  2. Step 2: Convert to fraction form
    1,814.78/2,722.19 = 950.78/x
  3. Step 3: Cross multiply
    1,814.78x = 2,722.19 × 950.78
  4. Step 4: Simplify right side
    1,814.78x = 2,588,185.44
  5. Step 5: Solve for x
    x = 2,588,185.44/1,814.78
  6. Step 6: Final answer
    x = 1,426.17

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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.