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Finding the Fourth Proportional to 8,466.44, 12,700.49 and 2,919.05

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Solution

The fourth proportional to 8,466.44, 12,700.49 and 2,919.05 is: 4,378.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,466.44 : 12,700.49 = 2,919.05 : x
  2. Step 2: Convert to fraction form
    8,466.44/12,700.49 = 2,919.05/x
  3. Step 3: Cross multiply
    8,466.44x = 12,700.49 × 2,919.05
  4. Step 4: Simplify right side
    8,466.44x = 37,073,334.86
  5. Step 5: Solve for x
    x = 37,073,334.86/8,466.44
  6. Step 6: Final answer
    x = 4,378.86

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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.