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Finding the Fourth Proportional to 8,157.58, 11,257.72 and 4,620.72

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Solution

The fourth proportional to 8,157.58, 11,257.72 and 4,620.72 is: 6,376.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157.58 : 11,257.72 = 4,620.72 : x
  2. Step 2: Convert to fraction form
    8,157.58/11,257.72 = 4,620.72/x
  3. Step 3: Cross multiply
    8,157.58x = 11,257.72 × 4,620.72
  4. Step 4: Simplify right side
    8,157.58x = 52,018,771.96
  5. Step 5: Solve for x
    x = 52,018,771.96/8,157.58
  6. Step 6: Final answer
    x = 6,376.74

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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.