Home / 5,679.82-8,521.63-2,905.75

Finding the Fourth Proportional to 5,679.82, 8,521.63 and 2,905.75

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Solution

The fourth proportional to 5,679.82, 8,521.63 and 2,905.75 is: 4,359.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.82 : 8,521.63 = 2,905.75 : x
  2. Step 2: Convert to fraction form
    5,679.82/8,521.63 = 2,905.75/x
  3. Step 3: Cross multiply
    5,679.82x = 8,521.63 × 2,905.75
  4. Step 4: Simplify right side
    5,679.82x = 24,761,713.97
  5. Step 5: Solve for x
    x = 24,761,713.97/5,679.82
  6. Step 6: Final answer
    x = 4,359.59

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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.