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Finding the Fourth Proportional to 8,361.36, 12,545.68 and 2,815.49

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Solution

The fourth proportional to 8,361.36, 12,545.68 and 2,815.49 is: 4,224.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,361.36 : 12,545.68 = 2,815.49 : x
  2. Step 2: Convert to fraction form
    8,361.36/12,545.68 = 2,815.49/x
  3. Step 3: Cross multiply
    8,361.36x = 12,545.68 × 2,815.49
  4. Step 4: Simplify right side
    8,361.36x = 35,322,236.58
  5. Step 5: Solve for x
    x = 35,322,236.58/8,361.36
  6. Step 6: Final answer
    x = 4,224.46

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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.