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Finding the Fourth Proportional to 2,702.82, 4,053.65 and 854.09

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Solution

The fourth proportional to 2,702.82, 4,053.65 and 854.09 is: 1,280.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,702.82 : 4,053.65 = 854.09 : x
  2. Step 2: Convert to fraction form
    2,702.82/4,053.65 = 854.09/x
  3. Step 3: Cross multiply
    2,702.82x = 4,053.65 × 854.09
  4. Step 4: Simplify right side
    2,702.82x = 3,462,157.39
  5. Step 5: Solve for x
    x = 3,462,157.39/2,702.82
  6. Step 6: Final answer
    x = 1,280.94

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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.