Home / 7,990.83-11,984.63-2,147.49

Finding the Fourth Proportional to 7,990.83, 11,984.63 and 2,147.49

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Solution

The fourth proportional to 7,990.83, 11,984.63 and 2,147.49 is: 3,220.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.83 : 11,984.63 = 2,147.49 : x
  2. Step 2: Convert to fraction form
    7,990.83/11,984.63 = 2,147.49/x
  3. Step 3: Cross multiply
    7,990.83x = 11,984.63 × 2,147.49
  4. Step 4: Simplify right side
    7,990.83x = 25,736,862.34
  5. Step 5: Solve for x
    x = 25,736,862.34/7,990.83
  6. Step 6: Final answer
    x = 3,220.80

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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.