Home / 3,878.54-5,348.45-3,320.85

Finding the Fourth Proportional to 3,878.54, 5,348.45 and 3,320.85

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Solution

The fourth proportional to 3,878.54, 5,348.45 and 3,320.85 is: 4,579.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.54 : 5,348.45 = 3,320.85 : x
  2. Step 2: Convert to fraction form
    3,878.54/5,348.45 = 3,320.85/x
  3. Step 3: Cross multiply
    3,878.54x = 5,348.45 × 3,320.85
  4. Step 4: Simplify right side
    3,878.54x = 17,761,383.58
  5. Step 5: Solve for x
    x = 17,761,383.58/3,878.54
  6. Step 6: Final answer
    x = 4,579.41

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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.