Home / 7,985.73-11,979.99-2,720.46

Finding the Fourth Proportional to 7,985.73, 11,979.99 and 2,720.46

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Solution

The fourth proportional to 7,985.73, 11,979.99 and 2,720.46 is: 4,081.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.73 : 11,979.99 = 2,720.46 : x
  2. Step 2: Convert to fraction form
    7,985.73/11,979.99 = 2,720.46/x
  3. Step 3: Cross multiply
    7,985.73x = 11,979.99 × 2,720.46
  4. Step 4: Simplify right side
    7,985.73x = 32,591,083.60
  5. Step 5: Solve for x
    x = 32,591,083.60/7,985.73
  6. Step 6: Final answer
    x = 4,081.17

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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.