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Finding the Fourth Proportional to 8,361.86, 12,542.47 and 2,518.31

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Solution

The fourth proportional to 8,361.86, 12,542.47 and 2,518.31 is: 3,777.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,361.86 : 12,542.47 = 2,518.31 : x
  2. Step 2: Convert to fraction form
    8,361.86/12,542.47 = 2,518.31/x
  3. Step 3: Cross multiply
    8,361.86x = 12,542.47 × 2,518.31
  4. Step 4: Simplify right side
    8,361.86x = 31,585,852.69
  5. Step 5: Solve for x
    x = 31,585,852.69/8,361.86
  6. Step 6: Final answer
    x = 3,777.37

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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.