Home / 8,087.49-12,127.39-2,821.86

Finding the Fourth Proportional to 8,087.49, 12,127.39 and 2,821.86

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Solution

The fourth proportional to 8,087.49, 12,127.39 and 2,821.86 is: 4,231.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,087.49 : 12,127.39 = 2,821.86 : x
  2. Step 2: Convert to fraction form
    8,087.49/12,127.39 = 2,821.86/x
  3. Step 3: Cross multiply
    8,087.49x = 12,127.39 × 2,821.86
  4. Step 4: Simplify right side
    8,087.49x = 34,221,796.75
  5. Step 5: Solve for x
    x = 34,221,796.75/8,087.49
  6. Step 6: Final answer
    x = 4,231.45

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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.