Home / 7,878.11-11,817.59-3,197.43

Finding the Fourth Proportional to 7,878.11, 11,817.59 and 3,197.43

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Solution

The fourth proportional to 7,878.11, 11,817.59 and 3,197.43 is: 4,796.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.11 : 11,817.59 = 3,197.43 : x
  2. Step 2: Convert to fraction form
    7,878.11/11,817.59 = 3,197.43/x
  3. Step 3: Cross multiply
    7,878.11x = 11,817.59 × 3,197.43
  4. Step 4: Simplify right side
    7,878.11x = 37,785,900.81
  5. Step 5: Solve for x
    x = 37,785,900.81/7,878.11
  6. Step 6: Final answer
    x = 4,796.32

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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.