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Finding the Fourth Proportional to 8,112.71, 12,168.90 and 4,951.08

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Solution

The fourth proportional to 8,112.71, 12,168.90 and 4,951.08 is: 7,426.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.71 : 12,168.90 = 4,951.08 : x
  2. Step 2: Convert to fraction form
    8,112.71/12,168.90 = 4,951.08/x
  3. Step 3: Cross multiply
    8,112.71x = 12,168.90 × 4,951.08
  4. Step 4: Simplify right side
    8,112.71x = 60,249,197.41
  5. Step 5: Solve for x
    x = 60,249,197.41/8,112.71
  6. Step 6: Final answer
    x = 7,426.52

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1.5x scale

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.