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Finding the Fourth Proportional to 8,156.15, 11,255.46 and 4,619.42

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Solution

The fourth proportional to 8,156.15, 11,255.46 and 4,619.42 is: 6,374.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,156.15 : 11,255.46 = 4,619.42 : x
  2. Step 2: Convert to fraction form
    8,156.15/11,255.46 = 4,619.42/x
  3. Step 3: Cross multiply
    8,156.15x = 11,255.46 × 4,619.42
  4. Step 4: Simplify right side
    8,156.15x = 51,993,697.03
  5. Step 5: Solve for x
    x = 51,993,697.03/8,156.15
  6. Step 6: Final answer
    x = 6,374.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.