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Finding the Fourth Proportional to 2,622.25, 3,933.51 and 843.45

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Solution

The fourth proportional to 2,622.25, 3,933.51 and 843.45 is: 1,265.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,622.25 : 3,933.51 = 843.45 : x
  2. Step 2: Convert to fraction form
    2,622.25/3,933.51 = 843.45/x
  3. Step 3: Cross multiply
    2,622.25x = 3,933.51 × 843.45
  4. Step 4: Simplify right side
    2,622.25x = 3,317,714.79
  5. Step 5: Solve for x
    x = 3,317,714.79/2,622.25
  6. Step 6: Final answer
    x = 1,265.22

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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.