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Finding the Fourth Proportional to 8,636.74, 12,955.40 and 2,396.82

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Solution

The fourth proportional to 8,636.74, 12,955.40 and 2,396.82 is: 3,595.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.74 : 12,955.40 = 2,396.82 : x
  2. Step 2: Convert to fraction form
    8,636.74/12,955.40 = 2,396.82/x
  3. Step 3: Cross multiply
    8,636.74x = 12,955.40 × 2,396.82
  4. Step 4: Simplify right side
    8,636.74x = 31,051,761.83
  5. Step 5: Solve for x
    x = 31,051,761.83/8,636.74
  6. Step 6: Final answer
    x = 3,595.31

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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.