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Finding the Fourth Proportional to 8,361.78, 12,543.75 and 2,518.98

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Solution

The fourth proportional to 8,361.78, 12,543.75 and 2,518.98 is: 3,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,361.78 : 12,543.75 = 2,518.98 : x
  2. Step 2: Convert to fraction form
    8,361.78/12,543.75 = 2,518.98/x
  3. Step 3: Cross multiply
    8,361.78x = 12,543.75 × 2,518.98
  4. Step 4: Simplify right side
    8,361.78x = 31,597,455.38
  5. Step 5: Solve for x
    x = 31,597,455.38/8,361.78
  6. Step 6: Final answer
    x = 3,778.80

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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.