Home / 7,867.72-11,801.61-3,187.81

Finding the Fourth Proportional to 7,867.72, 11,801.61 and 3,187.81

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Solution

The fourth proportional to 7,867.72, 11,801.61 and 3,187.81 is: 4,781.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,867.72 : 11,801.61 = 3,187.81 : x
  2. Step 2: Convert to fraction form
    7,867.72/11,801.61 = 3,187.81/x
  3. Step 3: Cross multiply
    7,867.72x = 11,801.61 × 3,187.81
  4. Step 4: Simplify right side
    7,867.72x = 37,621,329.35
  5. Step 5: Solve for x
    x = 37,621,329.35/7,867.72
  6. Step 6: Final answer
    x = 4,781.73

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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.