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Finding the Fourth Proportional to 8,781.53, 13,181.58 and 8,583.22

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Solution

The fourth proportional to 8,781.53, 13,181.58 and 8,583.22 is: 12,883.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.53 : 13,181.58 = 8,583.22 : x
  2. Step 2: Convert to fraction form
    8,781.53/13,181.58 = 8,583.22/x
  3. Step 3: Cross multiply
    8,781.53x = 13,181.58 × 8,583.22
  4. Step 4: Simplify right side
    8,781.53x = 113,140,335.95
  5. Step 5: Solve for x
    x = 113,140,335.95/8,781.53
  6. Step 6: Final answer
    x = 12,883.90

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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.