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Finding the Fourth Proportional to 4,881.66, 6,735.92 and 2,891.89

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Solution

The fourth proportional to 4,881.66, 6,735.92 and 2,891.89 is: 3,990.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.66 : 6,735.92 = 2,891.89 : x
  2. Step 2: Convert to fraction form
    4,881.66/6,735.92 = 2,891.89/x
  3. Step 3: Cross multiply
    4,881.66x = 6,735.92 × 2,891.89
  4. Step 4: Simplify right side
    4,881.66x = 19,479,539.69
  5. Step 5: Solve for x
    x = 19,479,539.69/4,881.66
  6. Step 6: Final answer
    x = 3,990.35

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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.