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Finding the Fourth Proportional to 8,365.80, 12,542.19 and 3,745.56

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Solution

The fourth proportional to 8,365.80, 12,542.19 and 3,745.56 is: 5,615.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,365.80 : 12,542.19 = 3,745.56 : x
  2. Step 2: Convert to fraction form
    8,365.80/12,542.19 = 3,745.56/x
  3. Step 3: Cross multiply
    8,365.80x = 12,542.19 × 3,745.56
  4. Step 4: Simplify right side
    8,365.80x = 46,977,525.18
  5. Step 5: Solve for x
    x = 46,977,525.18/8,365.80
  6. Step 6: Final answer
    x = 5,615.43

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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.