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Finding the Fourth Proportional to 8,968.26, 12,376.26 and 4,989.54

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Solution

The fourth proportional to 8,968.26, 12,376.26 and 4,989.54 is: 6,885.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.26 : 12,376.26 = 4,989.54 : x
  2. Step 2: Convert to fraction form
    8,968.26/12,376.26 = 4,989.54/x
  3. Step 3: Cross multiply
    8,968.26x = 12,376.26 × 4,989.54
  4. Step 4: Simplify right side
    8,968.26x = 61,751,844.32
  5. Step 5: Solve for x
    x = 61,751,844.32/8,968.26
  6. Step 6: Final answer
    x = 6,885.60

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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.