Home / 3,908.70-5,394.51-2,230.65

Finding the Fourth Proportional to 3,908.70, 5,394.51 and 2,230.65

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Solution

The fourth proportional to 3,908.70, 5,394.51 and 2,230.65 is: 3,078.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.70 : 5,394.51 = 2,230.65 : x
  2. Step 2: Convert to fraction form
    3,908.70/5,394.51 = 2,230.65/x
  3. Step 3: Cross multiply
    3,908.70x = 5,394.51 × 2,230.65
  4. Step 4: Simplify right side
    3,908.70x = 12,033,263.73
  5. Step 5: Solve for x
    x = 12,033,263.73/3,908.70
  6. Step 6: Final answer
    x = 3,078.58

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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.