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Finding the Fourth Proportional to 3,644, 5,490.82 and 3,246.18

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Solution

The fourth proportional to 3,644, 5,490.82 and 3,246.18 is: 4,891.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,644 : 5,490.82 = 3,246.18 : x
  2. Step 2: Convert to fraction form
    3,644/5,490.82 = 3,246.18/x
  3. Step 3: Cross multiply
    3,644x = 5,490.82 × 3,246.18
  4. Step 4: Simplify right side
    3,644x = 17,824,190.07
  5. Step 5: Solve for x
    x = 17,824,190.07/3,644
  6. Step 6: Final answer
    x = 4,891.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.