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Finding the Fourth Proportional to 2,830.32, 3,908.13 and 1,769.32

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Solution

The fourth proportional to 2,830.32, 3,908.13 and 1,769.32 is: 2,443.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.32 : 3,908.13 = 1,769.32 : x
  2. Step 2: Convert to fraction form
    2,830.32/3,908.13 = 1,769.32/x
  3. Step 3: Cross multiply
    2,830.32x = 3,908.13 × 1,769.32
  4. Step 4: Simplify right side
    2,830.32x = 6,914,732.57
  5. Step 5: Solve for x
    x = 6,914,732.57/2,830.32
  6. Step 6: Final answer
    x = 2,443.09

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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.