Home / 3,812.13-5,270.37-2,815.83

Finding the Fourth Proportional to 3,812.13, 5,270.37 and 2,815.83

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Solution

The fourth proportional to 3,812.13, 5,270.37 and 2,815.83 is: 3,892.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.13 : 5,270.37 = 2,815.83 : x
  2. Step 2: Convert to fraction form
    3,812.13/5,270.37 = 2,815.83/x
  3. Step 3: Cross multiply
    3,812.13x = 5,270.37 × 2,815.83
  4. Step 4: Simplify right side
    3,812.13x = 14,840,451.88
  5. Step 5: Solve for x
    x = 14,840,451.88/3,812.13
  6. Step 6: Final answer
    x = 3,892.96

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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.