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Finding the Fourth Proportional to 3,329.64, 4,988.79 and 1,865.16

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Solution

The fourth proportional to 3,329.64, 4,988.79 and 1,865.16 is: 2,794.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,329.64 : 4,988.79 = 1,865.16 : x
  2. Step 2: Convert to fraction form
    3,329.64/4,988.79 = 1,865.16/x
  3. Step 3: Cross multiply
    3,329.64x = 4,988.79 × 1,865.16
  4. Step 4: Simplify right side
    3,329.64x = 9,304,891.56
  5. Step 5: Solve for x
    x = 9,304,891.56/3,329.64
  6. Step 6: Final answer
    x = 2,794.56

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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.