Home / 4,076.80-5,625.60-2,819.20

Finding the Fourth Proportional to 4,076.80, 5,625.60 and 2,819.20

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Solution

The fourth proportional to 4,076.80, 5,625.60 and 2,819.20 is: 3,890.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,076.80 : 5,625.60 = 2,819.20 : x
  2. Step 2: Convert to fraction form
    4,076.80/5,625.60 = 2,819.20/x
  3. Step 3: Cross multiply
    4,076.80x = 5,625.60 × 2,819.20
  4. Step 4: Simplify right side
    4,076.80x = 15,859,691.52
  5. Step 5: Solve for x
    x = 15,859,691.52/4,076.80
  6. Step 6: Final answer
    x = 3,890.23

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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.