Home / 5,487.09-8,214.57-3,400.80

Finding the Fourth Proportional to 5,487.09, 8,214.57 and 3,400.80

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Solution

The fourth proportional to 5,487.09, 8,214.57 and 3,400.80 is: 5,091.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.09 : 8,214.57 = 3,400.80 : x
  2. Step 2: Convert to fraction form
    5,487.09/8,214.57 = 3,400.80/x
  3. Step 3: Cross multiply
    5,487.09x = 8,214.57 × 3,400.80
  4. Step 4: Simplify right side
    5,487.09x = 27,936,109.66
  5. Step 5: Solve for x
    x = 27,936,109.66/5,487.09
  6. Step 6: Final answer
    x = 5,091.24

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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.