Home / 5,586.40-8,380.68-2,123.38

Finding the Fourth Proportional to 5,586.40, 8,380.68 and 2,123.38

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Solution

The fourth proportional to 5,586.40, 8,380.68 and 2,123.38 is: 3,185.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,586.40 : 8,380.68 = 2,123.38 : x
  2. Step 2: Convert to fraction form
    5,586.40/8,380.68 = 2,123.38/x
  3. Step 3: Cross multiply
    5,586.40x = 8,380.68 × 2,123.38
  4. Step 4: Simplify right side
    5,586.40x = 17,795,315.78
  5. Step 5: Solve for x
    x = 17,795,315.78/5,586.40
  6. Step 6: Final answer
    x = 3,185.47

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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.