Home / 3,808.20-5,712.30-3,397.80

Finding the Fourth Proportional to 3,808.20, 5,712.30 and 3,397.80

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Solution

The fourth proportional to 3,808.20, 5,712.30 and 3,397.80 is: 5,096.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.20 : 5,712.30 = 3,397.80 : x
  2. Step 2: Convert to fraction form
    3,808.20/5,712.30 = 3,397.80/x
  3. Step 3: Cross multiply
    3,808.20x = 5,712.30 × 3,397.80
  4. Step 4: Simplify right side
    3,808.20x = 19,409,252.94
  5. Step 5: Solve for x
    x = 19,409,252.94/3,808.20
  6. Step 6: Final answer
    x = 5,096.70

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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.