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Finding the Fourth Proportional to 8,646.21, 12,984.98 and 7,951.64

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Solution

The fourth proportional to 8,646.21, 12,984.98 and 7,951.64 is: 11,941.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,646.21 : 12,984.98 = 7,951.64 : x
  2. Step 2: Convert to fraction form
    8,646.21/12,984.98 = 7,951.64/x
  3. Step 3: Cross multiply
    8,646.21x = 12,984.98 × 7,951.64
  4. Step 4: Simplify right side
    8,646.21x = 103,251,781.68
  5. Step 5: Solve for x
    x = 103,251,781.68/8,646.21
  6. Step 6: Final answer
    x = 11,941.85

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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.