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Finding the Fourth Proportional to 1,927.24, 2,891.10 and 628.26

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Solution

The fourth proportional to 1,927.24, 2,891.10 and 628.26 is: 942.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.24 : 2,891.10 = 628.26 : x
  2. Step 2: Convert to fraction form
    1,927.24/2,891.10 = 628.26/x
  3. Step 3: Cross multiply
    1,927.24x = 2,891.10 × 628.26
  4. Step 4: Simplify right side
    1,927.24x = 1,816,362.49
  5. Step 5: Solve for x
    x = 1,816,362.49/1,927.24
  6. Step 6: Final answer
    x = 942.47

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1.5x scale

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.