Home / 5,409.96-8,109.09-2,630.45

Finding the Fourth Proportional to 5,409.96, 8,109.09 and 2,630.45

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Solution

The fourth proportional to 5,409.96, 8,109.09 and 2,630.45 is: 3,942.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.96 : 8,109.09 = 2,630.45 : x
  2. Step 2: Convert to fraction form
    5,409.96/8,109.09 = 2,630.45/x
  3. Step 3: Cross multiply
    5,409.96x = 8,109.09 × 2,630.45
  4. Step 4: Simplify right side
    5,409.96x = 21,330,515.25
  5. Step 5: Solve for x
    x = 21,330,515.25/5,409.96
  6. Step 6: Final answer
    x = 3,942.82

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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.