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Finding the Fourth Proportional to 8,951.23, 12,357.31 and 6,310.42

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Solution

The fourth proportional to 8,951.23, 12,357.31 and 6,310.42 is: 8,711.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,951.23 : 12,357.31 = 6,310.42 : x
  2. Step 2: Convert to fraction form
    8,951.23/12,357.31 = 6,310.42/x
  3. Step 3: Cross multiply
    8,951.23x = 12,357.31 × 6,310.42
  4. Step 4: Simplify right side
    8,951.23x = 77,979,850.84
  5. Step 5: Solve for x
    x = 77,979,850.84/8,951.23
  6. Step 6: Final answer
    x = 8,711.64

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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.