Home / 5,405.36-8,110.08-2,120.73

Finding the Fourth Proportional to 5,405.36, 8,110.08 and 2,120.73

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Solution

The fourth proportional to 5,405.36, 8,110.08 and 2,120.73 is: 3,181.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.36 : 8,110.08 = 2,120.73 : x
  2. Step 2: Convert to fraction form
    5,405.36/8,110.08 = 2,120.73/x
  3. Step 3: Cross multiply
    5,405.36x = 8,110.08 × 2,120.73
  4. Step 4: Simplify right side
    5,405.36x = 17,199,289.96
  5. Step 5: Solve for x
    x = 17,199,289.96/5,405.36
  6. Step 6: Final answer
    x = 3,181.90

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1.5x scale

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.