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Finding the Fourth Proportional to 4,878.73, 6,731.71 and 2,889.68

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Solution

The fourth proportional to 4,878.73, 6,731.71 and 2,889.68 is: 3,987.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.73 : 6,731.71 = 2,889.68 : x
  2. Step 2: Convert to fraction form
    4,878.73/6,731.71 = 2,889.68/x
  3. Step 3: Cross multiply
    4,878.73x = 6,731.71 × 2,889.68
  4. Step 4: Simplify right side
    4,878.73x = 19,452,446.87
  5. Step 5: Solve for x
    x = 19,452,446.87/4,878.73
  6. Step 6: Final answer
    x = 3,987.19

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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.