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Finding the Fourth Proportional to 8,587.94, 12,877.79 and 3,654.90

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Solution

The fourth proportional to 8,587.94, 12,877.79 and 3,654.90 is: 5,480.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.94 : 12,877.79 = 3,654.90 : x
  2. Step 2: Convert to fraction form
    8,587.94/12,877.79 = 3,654.90/x
  3. Step 3: Cross multiply
    8,587.94x = 12,877.79 × 3,654.90
  4. Step 4: Simplify right side
    8,587.94x = 47,067,016.40
  5. Step 5: Solve for x
    x = 47,067,016.40/8,587.94
  6. Step 6: Final answer
    x = 5,480.60

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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.