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Finding the Fourth Proportional to 2,151.44, 3,227.17 and 612.44

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Solution

The fourth proportional to 2,151.44, 3,227.17 and 612.44 is: 918.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.44 : 3,227.17 = 612.44 : x
  2. Step 2: Convert to fraction form
    2,151.44/3,227.17 = 612.44/x
  3. Step 3: Cross multiply
    2,151.44x = 3,227.17 × 612.44
  4. Step 4: Simplify right side
    2,151.44x = 1,976,447.99
  5. Step 5: Solve for x
    x = 1,976,447.99/2,151.44
  6. Step 6: Final answer
    x = 918.66

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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.