Home / 5,131.50-7,081.90-2,893.26

Finding the Fourth Proportional to 5,131.50, 7,081.90 and 2,893.26

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Solution

The fourth proportional to 5,131.50, 7,081.90 and 2,893.26 is: 3,992.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.50 : 7,081.90 = 2,893.26 : x
  2. Step 2: Convert to fraction form
    5,131.50/7,081.90 = 2,893.26/x
  3. Step 3: Cross multiply
    5,131.50x = 7,081.90 × 2,893.26
  4. Step 4: Simplify right side
    5,131.50x = 20,489,777.99
  5. Step 5: Solve for x
    x = 20,489,777.99/5,131.50
  6. Step 6: Final answer
    x = 3,992.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.