Home / 5,679.34-8,517.15-2,391.82

Finding the Fourth Proportional to 5,679.34, 8,517.15 and 2,391.82

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Solution

The fourth proportional to 5,679.34, 8,517.15 and 2,391.82 is: 3,586.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.34 : 8,517.15 = 2,391.82 : x
  2. Step 2: Convert to fraction form
    5,679.34/8,517.15 = 2,391.82/x
  3. Step 3: Cross multiply
    5,679.34x = 8,517.15 × 2,391.82
  4. Step 4: Simplify right side
    5,679.34x = 20,371,489.71
  5. Step 5: Solve for x
    x = 20,371,489.71/5,679.34
  6. Step 6: Final answer
    x = 3,586.95

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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.