Home / 7,989.24-11,984.75-2,146.31

Finding the Fourth Proportional to 7,989.24, 11,984.75 and 2,146.31

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Solution

The fourth proportional to 7,989.24, 11,984.75 and 2,146.31 is: 3,219.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.24 : 11,984.75 = 2,146.31 : x
  2. Step 2: Convert to fraction form
    7,989.24/11,984.75 = 2,146.31/x
  3. Step 3: Cross multiply
    7,989.24x = 11,984.75 × 2,146.31
  4. Step 4: Simplify right side
    7,989.24x = 25,722,971.11
  5. Step 5: Solve for x
    x = 25,722,971.11/7,989.24
  6. Step 6: Final answer
    x = 3,219.70

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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.