Home / 3,913.25-5,400.77-2,257.25

Finding the Fourth Proportional to 3,913.25, 5,400.77 and 2,257.25

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Solution

The fourth proportional to 3,913.25, 5,400.77 and 2,257.25 is: 3,115.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.25 : 5,400.77 = 2,257.25 : x
  2. Step 2: Convert to fraction form
    3,913.25/5,400.77 = 2,257.25/x
  3. Step 3: Cross multiply
    3,913.25x = 5,400.77 × 2,257.25
  4. Step 4: Simplify right side
    3,913.25x = 12,190,876.80
  5. Step 5: Solve for x
    x = 12,190,876.80/3,913.25
  6. Step 6: Final answer
    x = 3,115.28

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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.