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Finding the Fourth Proportional to 8,125.64, 12,188.46 and 1,969.64

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Solution

The fourth proportional to 8,125.64, 12,188.46 and 1,969.64 is: 2,954.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.64 : 12,188.46 = 1,969.64 : x
  2. Step 2: Convert to fraction form
    8,125.64/12,188.46 = 1,969.64/x
  3. Step 3: Cross multiply
    8,125.64x = 12,188.46 × 1,969.64
  4. Step 4: Simplify right side
    8,125.64x = 24,006,878.35
  5. Step 5: Solve for x
    x = 24,006,878.35/8,125.64
  6. Step 6: Final answer
    x = 2,954.46

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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.