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Finding the Fourth Proportional to 3,399, 4,690.64 and 1,983.66

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Solution

The fourth proportional to 3,399, 4,690.64 and 1,983.66 is: 2,737.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399 : 4,690.64 = 1,983.66 : x
  2. Step 2: Convert to fraction form
    3,399/4,690.64 = 1,983.66/x
  3. Step 3: Cross multiply
    3,399x = 4,690.64 × 1,983.66
  4. Step 4: Simplify right side
    3,399x = 9,304,625.02
  5. Step 5: Solve for x
    x = 9,304,625.02/3,399
  6. Step 6: Final answer
    x = 2,737.46

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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.