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Finding the Fourth Proportional to 8,968.59, 12,375.54 and 4,989.42

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Solution

The fourth proportional to 8,968.59, 12,375.54 and 4,989.42 is: 6,884.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.59 : 12,375.54 = 4,989.42 : x
  2. Step 2: Convert to fraction form
    8,968.59/12,375.54 = 4,989.42/x
  3. Step 3: Cross multiply
    8,968.59x = 12,375.54 × 4,989.42
  4. Step 4: Simplify right side
    8,968.59x = 61,746,766.79
  5. Step 5: Solve for x
    x = 61,746,766.79/8,968.59
  6. Step 6: Final answer
    x = 6,884.78

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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.