Home / 3,878.54-5,352.44-2,385.57

Finding the Fourth Proportional to 3,878.54, 5,352.44 and 2,385.57

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Solution

The fourth proportional to 3,878.54, 5,352.44 and 2,385.57 is: 3,292.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.54 : 5,352.44 = 2,385.57 : x
  2. Step 2: Convert to fraction form
    3,878.54/5,352.44 = 2,385.57/x
  3. Step 3: Cross multiply
    3,878.54x = 5,352.44 × 2,385.57
  4. Step 4: Simplify right side
    3,878.54x = 12,768,608.36
  5. Step 5: Solve for x
    x = 12,768,608.36/3,878.54
  6. Step 6: Final answer
    x = 3,292.12

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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.