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Finding the Fourth Proportional to 8,180.64, 12,275.08 and 3,259.90

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Solution

The fourth proportional to 8,180.64, 12,275.08 and 3,259.90 is: 4,891.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,180.64 : 12,275.08 = 3,259.90 : x
  2. Step 2: Convert to fraction form
    8,180.64/12,275.08 = 3,259.90/x
  3. Step 3: Cross multiply
    8,180.64x = 12,275.08 × 3,259.90
  4. Step 4: Simplify right side
    8,180.64x = 40,015,533.29
  5. Step 5: Solve for x
    x = 40,015,533.29/8,180.64
  6. Step 6: Final answer
    x = 4,891.49

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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.