Home / 5,405.80-8,105.88-3,650.74

Finding the Fourth Proportional to 5,405.80, 8,105.88 and 3,650.74

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Solution

The fourth proportional to 5,405.80, 8,105.88 and 3,650.74 is: 5,474.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.80 : 8,105.88 = 3,650.74 : x
  2. Step 2: Convert to fraction form
    5,405.80/8,105.88 = 3,650.74/x
  3. Step 3: Cross multiply
    5,405.80x = 8,105.88 × 3,650.74
  4. Step 4: Simplify right side
    5,405.80x = 29,592,460.35
  5. Step 5: Solve for x
    x = 29,592,460.35/5,405.80
  6. Step 6: Final answer
    x = 5,474.21

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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.