Home / 3,869.04-5,339.41-2,190.42

Finding the Fourth Proportional to 3,869.04, 5,339.41 and 2,190.42

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Solution

The fourth proportional to 3,869.04, 5,339.41 and 2,190.42 is: 3,022.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.04 : 5,339.41 = 2,190.42 : x
  2. Step 2: Convert to fraction form
    3,869.04/5,339.41 = 2,190.42/x
  3. Step 3: Cross multiply
    3,869.04x = 5,339.41 × 2,190.42
  4. Step 4: Simplify right side
    3,869.04x = 11,695,550.45
  5. Step 5: Solve for x
    x = 11,695,550.45/3,869.04
  6. Step 6: Final answer
    x = 3,022.86

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Half scale
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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.