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Finding the Fourth Proportional to 8,650.53, 12,977.42 and 2,805.57

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Solution

The fourth proportional to 8,650.53, 12,977.42 and 2,805.57 is: 4,208.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,650.53 : 12,977.42 = 2,805.57 : x
  2. Step 2: Convert to fraction form
    8,650.53/12,977.42 = 2,805.57/x
  3. Step 3: Cross multiply
    8,650.53x = 12,977.42 × 2,805.57
  4. Step 4: Simplify right side
    8,650.53x = 36,409,046.20
  5. Step 5: Solve for x
    x = 36,409,046.20/8,650.53
  6. Step 6: Final answer
    x = 4,208.88

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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.