Home / 7,985.53-11,977.39-2,141.69

Finding the Fourth Proportional to 7,985.53, 11,977.39 and 2,141.69

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Solution

The fourth proportional to 7,985.53, 11,977.39 and 2,141.69 is: 3,212.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.53 : 11,977.39 = 2,141.69 : x
  2. Step 2: Convert to fraction form
    7,985.53/11,977.39 = 2,141.69/x
  3. Step 3: Cross multiply
    7,985.53x = 11,977.39 × 2,141.69
  4. Step 4: Simplify right side
    7,985.53x = 25,651,856.39
  5. Step 5: Solve for x
    x = 25,651,856.39/7,985.53
  6. Step 6: Final answer
    x = 3,212.29

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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.