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Finding the Fourth Proportional to 8,242.95, 12,361.10 and 5,118.33

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Solution

The fourth proportional to 8,242.95, 12,361.10 and 5,118.33 is: 7,675.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,242.95 : 12,361.10 = 5,118.33 : x
  2. Step 2: Convert to fraction form
    8,242.95/12,361.10 = 5,118.33/x
  3. Step 3: Cross multiply
    8,242.95x = 12,361.10 × 5,118.33
  4. Step 4: Simplify right side
    8,242.95x = 63,268,163.37
  5. Step 5: Solve for x
    x = 63,268,163.37/8,242.95
  6. Step 6: Final answer
    x = 7,675.43

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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.