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Finding the Fourth Proportional to 1,927.23, 2,891.04 and 628.39

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Solution

The fourth proportional to 1,927.23, 2,891.04 and 628.39 is: 942.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.23 : 2,891.04 = 628.39 : x
  2. Step 2: Convert to fraction form
    1,927.23/2,891.04 = 628.39/x
  3. Step 3: Cross multiply
    1,927.23x = 2,891.04 × 628.39
  4. Step 4: Simplify right side
    1,927.23x = 1,816,700.63
  5. Step 5: Solve for x
    x = 1,816,700.63/1,927.23
  6. Step 6: Final answer
    x = 942.65

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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.