Home / 5,255.05-7,875.77-2,131.41

Finding the Fourth Proportional to 5,255.05, 7,875.77 and 2,131.41

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Solution

The fourth proportional to 5,255.05, 7,875.77 and 2,131.41 is: 3,194.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,255.05 : 7,875.77 = 2,131.41 : x
  2. Step 2: Convert to fraction form
    5,255.05/7,875.77 = 2,131.41/x
  3. Step 3: Cross multiply
    5,255.05x = 7,875.77 × 2,131.41
  4. Step 4: Simplify right side
    5,255.05x = 16,786,494.94
  5. Step 5: Solve for x
    x = 16,786,494.94/5,255.05
  6. Step 6: Final answer
    x = 3,194.35

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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.