Home / 3,821.62-5,298.25-3,686.30

Finding the Fourth Proportional to 3,821.62, 5,298.25 and 3,686.30

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Solution

The fourth proportional to 3,821.62, 5,298.25 and 3,686.30 is: 5,110.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.62 : 5,298.25 = 3,686.30 : x
  2. Step 2: Convert to fraction form
    3,821.62/5,298.25 = 3,686.30/x
  3. Step 3: Cross multiply
    3,821.62x = 5,298.25 × 3,686.30
  4. Step 4: Simplify right side
    3,821.62x = 19,530,938.98
  5. Step 5: Solve for x
    x = 19,530,938.98/3,821.62
  6. Step 6: Final answer
    x = 5,110.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.