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Finding the Fourth Proportional to 3,400.37, 4,691.71 and 1,983.21

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Solution

The fourth proportional to 3,400.37, 4,691.71 and 1,983.21 is: 2,736.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.37 : 4,691.71 = 1,983.21 : x
  2. Step 2: Convert to fraction form
    3,400.37/4,691.71 = 1,983.21/x
  3. Step 3: Cross multiply
    3,400.37x = 4,691.71 × 1,983.21
  4. Step 4: Simplify right side
    3,400.37x = 9,304,646.19
  5. Step 5: Solve for x
    x = 9,304,646.19/3,400.37
  6. Step 6: Final answer
    x = 2,736.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.