Home / 8,361.05-12,541.77-3,978.95

Finding the Fourth Proportional to 8,361.05, 12,541.77 and 3,978.95

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Solution

The fourth proportional to 8,361.05, 12,541.77 and 3,978.95 is: 5,968.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,361.05 : 12,541.77 = 3,978.95 : x
  2. Step 2: Convert to fraction form
    8,361.05/12,541.77 = 3,978.95/x
  3. Step 3: Cross multiply
    8,361.05x = 12,541.77 × 3,978.95
  4. Step 4: Simplify right side
    8,361.05x = 49,903,013.03
  5. Step 5: Solve for x
    x = 49,903,013.03/8,361.05
  6. Step 6: Final answer
    x = 5,968.51

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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.