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Finding the Fourth Proportional to 8,181.70, 12,272.55 and 4,495.30

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Solution

The fourth proportional to 8,181.70, 12,272.55 and 4,495.30 is: 6,742.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,181.70 : 12,272.55 = 4,495.30 : x
  2. Step 2: Convert to fraction form
    8,181.70/12,272.55 = 4,495.30/x
  3. Step 3: Cross multiply
    8,181.70x = 12,272.55 × 4,495.30
  4. Step 4: Simplify right side
    8,181.70x = 55,168,794.02
  5. Step 5: Solve for x
    x = 55,168,794.02/8,181.70
  6. Step 6: Final answer
    x = 6,742.95

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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.