Home / 5,636.45-8,455.82-1,687.80

Finding the Fourth Proportional to 5,636.45, 8,455.82 and 1,687.80

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Solution

The fourth proportional to 5,636.45, 8,455.82 and 1,687.80 is: 2,532.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,636.45 : 8,455.82 = 1,687.80 : x
  2. Step 2: Convert to fraction form
    5,636.45/8,455.82 = 1,687.80/x
  3. Step 3: Cross multiply
    5,636.45x = 8,455.82 × 1,687.80
  4. Step 4: Simplify right side
    5,636.45x = 14,271,724.56
  5. Step 5: Solve for x
    x = 14,271,724.56/5,636.45
  6. Step 6: Final answer
    x = 2,532.04

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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.