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Finding the Fourth Proportional to 8,968.34, 12,376.14 and 4,989.44

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Solution

The fourth proportional to 8,968.34, 12,376.14 and 4,989.44 is: 6,885.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.34 : 12,376.14 = 4,989.44 : x
  2. Step 2: Convert to fraction form
    8,968.34/12,376.14 = 4,989.44/x
  3. Step 3: Cross multiply
    8,968.34x = 12,376.14 × 4,989.44
  4. Step 4: Simplify right side
    8,968.34x = 61,750,007.96
  5. Step 5: Solve for x
    x = 61,750,007.96/8,968.34
  6. Step 6: Final answer
    x = 6,885.33

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1.5x scale

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.