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Finding the Fourth Proportional to 2,872.34, 3,964.62 and 1,693.82

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Solution

The fourth proportional to 2,872.34, 3,964.62 and 1,693.82 is: 2,337.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.34 : 3,964.62 = 1,693.82 : x
  2. Step 2: Convert to fraction form
    2,872.34/3,964.62 = 1,693.82/x
  3. Step 3: Cross multiply
    2,872.34x = 3,964.62 × 1,693.82
  4. Step 4: Simplify right side
    2,872.34x = 6,715,352.65
  5. Step 5: Solve for x
    x = 6,715,352.65/2,872.34
  6. Step 6: Final answer
    x = 2,337.94

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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.