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Finding the Fourth Proportional to 8,656.31, 12,987.48 and 2,734.11

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Solution

The fourth proportional to 8,656.31, 12,987.48 and 2,734.11 is: 4,102.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.31 : 12,987.48 = 2,734.11 : x
  2. Step 2: Convert to fraction form
    8,656.31/12,987.48 = 2,734.11/x
  3. Step 3: Cross multiply
    8,656.31x = 12,987.48 × 2,734.11
  4. Step 4: Simplify right side
    8,656.31x = 35,509,198.94
  5. Step 5: Solve for x
    x = 35,509,198.94/8,656.31
  6. Step 6: Final answer
    x = 4,102.12

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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.